Respiratory System Disease Symptoms Treatment and Prevention
If you are preparing to work as a
Pharmaceutical Sales Representative, knowing Respiratory System Disease Symptoms Treatment and Prevention is
very important. This article explains the basics in simple words, so even
beginners can follow without difficulty. You will get a clear idea of how
common respiratory diseases appear, what symptoms to notice, and the basic
ways they are treated and prevented.
Whether you are new in this field or already working, this knowledge is
useful. It will help you talk with doctors and healthcare professionals in a
more confident and clear way.
Table of contents: Respiratory System Disease Symptoms Treatment and Prevention
Check out the table of contents of the article-
- Respiratory System Disease Symptoms Treatment and Prevention
- Classification Chart of Respiratory System Drugs
- Therapeutic Basics of Respiratory System Generic Drugs
- Basics of antihistamines and asthma
- Respiratory and Allergy Terminology
- Types of Inhalers
- Cough Preparations
- Some important definition
- Diagnostic Tests for Respiratory System Diseases
- FAQs
- Conclusion
Respiratory System Disease Symptoms Treatment and Prevention
Respiratory diseases:Respiratory diseases are illnesses that affect the lungs and other parts
of the respiratory system, such as the
trachea,
bronchi, and
alveoli. They can be caused by infections, environmental factors, or chronic
conditions.
Respiratory System Disease
Bronchitis:Bronchitis is inflammation of the mucous membranes of the bronchi, the
airways that carry airflow from the trachea into the lungs.
Bronchospasm: Bronchospasm or a bronchial spasm is a sudden constriction of the
muscles in the walls of the
bronchioles.
Bronchoconstriction: Bronchoconstriction is the constriction of the airways in the lungs
due to the tightening of surrounding smooth muscle, with consequent
coughing, wheezing, and shortness of breath.
COPD: Chronic obstructive pulmonary disease
(COPD) is the co-occurrence of
chronic bronchitis
and
emphysema, a pair of commonly co-existing diseases of the lungs in which the airways
become narrowed.
Emphysema: Emphysema is a lung condition that causes shortness
of breath. In people with emphysema, the air sacs in the lungs (alveoli) are
damaged. Over time, the inner walls of the air sacs weaken and rupture.
ACOS: ACOS means
Asthma
and COPD happening together. It causes breathing difficulty, cough, and
wheezing. It usually occurs in older people or smokers with lung problems.
Proper use of inhalers and medicines can help control it.
Asthma: Asthma is a condition in which the airways become
inflamed and narrow, leading to episodes of wheezing, breathlessness,
chest tightness, and coughing. Triggers may include allergens,
pollution, or exercise.
Tuberculosis (TB): Tuberculosis is an infectious disease
caused by the bacterium
Mycobacterium tuberculosis. It primarily affects the lungs, causing cough (sometimes with blood),
weight loss, fever, and night sweats.
Pneumonia: Pneumonia is an infection that inflames the air sacs (alveoli) in
one or both lungs. The air sacs may fill with fluid or pus, leading to
cough with phlegm, fever, chills, and difficulty breathing.
Influenza (Flu): Influenza is a viral infection that attacks
the respiratory system, causing fever, cough, sore throat, runny nose,
body aches, and fatigue.
COVID-19: COVID-19 is a respiratory illness caused by the
SARS-CoV-2
virus. It can range from mild symptoms like cough and fever to severe
breathing difficulties.
Pulmonary Fibrosis: Pulmonary fibrosis is a condition where lung tissue becomes
scarred and stiff, leading to progressive shortness of breath and
reduced oxygen intake.
Interstitial Lung Disease (ILD): ILD is a group of disorders
that cause inflammation and scarring of lung tissue, making breathing
difficult.
Lung Cancer: Lung cancer is the uncontrolled growth of abnormal cells in the
lungs, which can block airflow and cause persistent cough, chest pain,
and weight loss.
Sleep Apnea: Sleep apnea is a disorder in which breathing repeatedly stops and
starts during sleep, leading to snoring and daytime fatigue.
Cystic Fibrosis: Cystic fibrosis is a genetic disorder that causes thick, sticky
mucus to build up in the lungs, leading to infections and breathing
problems.
Pleural Effusion: Pleural effusion is the buildup of excess fluid between the
layers of the pleura outside the lungs, causing chest pain and shortness
of breath.
Respiratory System Disease Symptoms
Respiratory diseases show some clear symptoms that help in early
understanding of the condition. The most common signs include:
- Coughing – it may be dry or with mucus, depending on the disease.
- Shortness of breath – feeling breathless even after light activity.
- Wheezing – a whistling sound while breathing.
- Chest tightness or pain – discomfort or pressure in the chest area.
- Excess mucus or phlegm – especially in chronic diseases like bronchitis.
- Fatigue – feeling weak or tired due to low oxygen supply.
- Fever and chills – common in infections like pneumonia or tuberculosis.
These symptoms may appear differently depending on the disease, but noticing
them early can help in faster treatment and better management.
Respiratory System Disease Treatment
Treatment for respiratory system diseases depends on the type and severity
of the condition, but some common approaches include:
- Medications – Inhalers, antibiotics, antivirals, or steroids are often used to reduce symptoms and control the disease.
- Oxygen therapy – For patients with chronic breathing problems, extra oxygen helps maintain normal levels in the blood.
- Lifestyle changes – Quitting smoking, eating healthy, and regular exercise improve lung health and make treatments more effective.
- Vaccination – Flu shots and pneumonia vaccines can prevent serious infections.
- Pulmonary rehabilitation – Breathing exercises and guided training help patients manage long-term conditions like COPD.
- Surgery (in severe cases) – In advanced diseases such as lung cancer or damaged lung tissue, surgery may be required.
The main goal of treatment is to ease symptoms, improve breathing, and
prevent the disease from getting worse. Early treatment usually gives better
results and improves quality of life.
Respiratory System Disease Prevention
Preventing respiratory diseases is often easier than treating them. Some
simple but effective steps include:
- Quit smoking – Smoking is the leading cause of many chronic lung diseases. Stopping it greatly lowers the risk.
- Avoid polluted air – Try to stay away from dust, smoke, and harmful chemicals. Use a mask if needed.
- Get vaccinated – Flu and pneumonia vaccines protect against serious infections.
- Stay active – Regular exercise helps strengthen the lungs and improve breathing.
- Maintain hygiene – Wash hands often and avoid close contact with sick people to reduce infection risk.
- Eat healthy – A balanced diet rich in fruits and vegetables supports stronger immunity.
- Regular checkups – Visiting a doctor for early screening helps catch problems before they become serious.
By following these preventive measures, you can lower the chances of
developing respiratory system diseases and keep your lungs healthy for the
long run.
Classification Chart of Respiratory System Drugs
| Sl. No | Sub Class | Therapeutic Group |
|---|---|---|
| 1 | Antihistamines (Anti-allergy drugs) |
a) New generation antihistamines
b) Second generation antihistamines
c) First generation antihistamines
d) Mast cell stabilizers
e) Ophthalmic antihistamines
f) Nasal/ocular antihistamines
|
| 2 | Anti-Asthmatic |
a) Leukotriene Receptor Antagonists (LTRAs)
b) Bronchodilators (SABA, LABA)
c) Inhaled Corticosteroids (ICS)
d) ICS + LABA combinations
e) Phosphodiesterase Inhibitors
f) Xanthine derivatives (under methylxanthines, e.g.,
theophylline)
|
| 3 | Cough & Cold Preparations |
a) Expectorants / Mucolytics
b) Antitussives
c) Demulcents (soothing agents, like lozenges/syrups)
|
| 4 | ICS + LABA Combinations (for Moderate/Severe Asthma & COPD) | a) Corticosteroid + LABA combinations |
| 5 | Long-Acting Muscarinic Antagonists (LAMA) | a) LAMA agents |
| 6 | Nasal Decongestants |
a) Topical decongestants
b) Oral decongestants
|
| 7 | Monoclonal Antibodies (Biologics) |
a) Anti-IgE antibodies (e.g., Omalizumab)
b) Anti-IL5, Anti-IL4/13 biologics (used in severe uncontrolled
asthma)
|
| 8 | Antitubercular Drugs (for TB affecting respiratory system) |
a) First-line agents
b) Second-line agents
|
| 9 | Antiviral & Antifungal Respiratory Drugs |
a) Antiviral drugs (for influenza, RSV)
b) Antifungal drugs (for pulmonary mycoses)
|
Therapeutic Basics of Respiratory System Generic Drugs
Here is a list of generic drugs commonly prescribed for the management of
different respiratory diseases.
Sub Class: Antihistamines (Allergy Medicines)
Purpose: Reduce symptoms of allergy such as sneezing, cough,
itching, seasonal rhinitis, conjunctivitis, and skin allergy.
| Therapeutic Group | Generic Name | Training Note |
|---|---|---|
| New Generation Antihistamines | Bilastine, Ebastine, Rupatadine | Fewer side effects, non-sedating, effective in allergic rhinitis |
| Second Generation Antihistamines | Cetirizine, Levocetirizine, Loratadine, Desloratadine, Fexofenadine | Relief from sneezing, nasal blockage, itchy eyes |
| First Generation Antihistamines | Chlorpheniramine, Diphenhydramine, Mebhydrolin |
Sedative effect, useful at night
|
| Mast Cell Stabilizer | Ketotifen | Prevents allergic asthma attacks |
| Ophthalmic Antihistamine | Olopatadine | Used in allergic conjunctivitis (eye drops) |
| Nasal/Eye Antihistamine | Azelastine | Nasal spray/eye drops for allergy |
Sub Class: Anti-Asthmatic Drugs
Purpose: Relieve and control asthma and COPD symptoms by
bronchodilation and reducing inflammation.
| Therapeutic Group | Generic Name | Training Note |
|---|---|---|
| LTRAs | Montelukast, Pranlukast, Zafirlukast | Long-term asthma control, effective in allergic asthma |
| Therapeutic Group | Generic Name | Training Note |
|---|---|---|
| Short-acting Beta-2 Agonists (SABA) | Salbutamol, Levosalbutamol | Immediate relief in acute asthma |
| SABA + Anticholinergic | Salbutamol + Ipratropium | Dual action for asthma & COPD |
| Long-acting Beta-2 Agonists (LABA) | Formoterol, Salmeterol | Long-term bronchodilation |
| Long-acting Muscarinic Antagonists (LAMA) | Tiotropium, Indacaterol + Glycopyrronium | Maintenance therapy in COPD |
| Inhaled Corticosteroids (ICS) | Budesonide, Beclomethasone, Fluticasone | Reduces airway inflammation |
| ICS + LABA Combinations | Salmeterol + Fluticasone, Beclomethasone + Formoterol, Budesonide + Formoterol | More effective in moderate to severe asthma |
| Therapeutic Group | Generic Name | Training Note |
|---|---|---|
| Xanthine Derivatives | Theophylline, Doxofylline | Relaxes airway muscles |
| PDE-4 Inhibitor | Roflumilast | For severe COPD, anti-inflammatory action |
Sub Class: Cough & Cold Preparations
Purpose: Manage dry and wet cough, relieve nasal congestion.
| Therapeutic Group | Generic Name | Training Note |
|---|---|---|
| Mucolytic | Ambroxol, Acetylcysteine, Bromhexine Hydrochloride | Breaks mucus, easier expectoration |
| Expectorant Combinations | Guaifenesin + Diphenhydramine + Levomenthol, Guaifenesin + Dextromethorphan + Menthol | Relief in productive cough |
| Herbal Syrup | Vasakarista | Natural herbal cough remedy |
| Saline Nasal Spray | Sodium Chloride | Clears nasal blockage |
| Therapeutic Group | Generic Name | Training Note |
|---|---|---|
| Central Antitussive | Butamirate Citrate | Suppresses dry cough |
| Cough Syrup Combination | Dextromethorphan + Phenylephrine + Triprolidine, Dextromethorphan + Pseudoephedrine + Triprolidin | Relieves cough & nasal congestion |
| Central Antitussive | Dextromethorphan | Widely used, non-opioid |
| Opioid Antitussive | Codeine Phosphate | Strong cough suppressant (prescription only) |
Sub Class: ICS + LABA (Combination Inhalers)
Purpose: Used in moderate to severe asthma and COPD for long-term
control.
| Therapeutic Group | Generic Name | Training Note |
|---|---|---|
| ICS + LABA | Mometasone + Formoterol, Fluticasone + Salmeterol, Budesonide + Formoterol | Improves symptoms, prevents exacerbations |
Sub Class: Long-acting Muscarinic Antagonists (LAMA)
Purpose: Maintenance therapy in COPD and chronic respiratory
diseases.
| Therapeutic Group | Generic Name | Training Note |
|---|---|---|
| LAMA | Tiotropium, Glycopyrronium, Revefenacin, Aclidinium, Umeclidinium | Provides 24-hour bronchodilation, reduces COPD exacerbations |
Sub Class: Other Important Drugs
Purpose: Relief from nasal congestion and respiratory symptoms.
| Therapeutic Group | Generic Name | Training Note |
|---|---|---|
| Nasal Decongestant | Oxymetazoline, Xylometazoline | Nasal spray/drops for blocked nose, short-term use only |
Basics of antihistamines and asthma
Antihistamines work by blocking histamine, the chemical that causes allergy
symptoms like sneezing, itching, and runny nose. On the other hand, asthma
drugs help relax and open the airways, making it easier for patients to
breathe and keep their symptoms under control.
What is Histamine?
Histamine is a substance found in virtually all animal body cells. It is
produced from the amino acid-Histidine, which causes the dilation of
blood vessels, increased secretion of acid by the stomach, smooth muscle
constriction (e.g. in the bronchi), mucus production, tissue swelling
and itching (during allergic reactions).
What is Antihistamine?
An antihistamine (or histamine antagonist) is an agent that inhibits the
actions of histamine by blocking histamine receptors.
H₁ antihistamines are used as the treatment for symptoms of allergies,
such as sneezing, runny nose, watery eyes, itching etc.
Note:
- H₁ antihistamines are generally used for allergies.
- H₂ antihistamines are used to reduce stomach acid.
Mode of action of all antihistamines
H₁-antihistamines work by binding to histamine H₁ receptors in mast cells,
smooth muscle, and endothelium in the body. Antihistamines that target the
histamine H₁-receptor are used to treat allergic reactions.
This diagram is a flowchart that explains the mode of action of all
antihistamines.
Step-by-step explanation:
1.
Allergen
(Dust, Pollen, etc.)
- → Allergens (like dust and pollen) enter the body.
2. Mast Cell
- → The allergen activates the mast cell.
3. Histamine
- → Histamine is released from the mast cell.
4. Then, there are two possible pathways:
-
Histamine + H₁ Receptor → Allergic Reaction
- → This combination causes an allergic reaction.
-
Anti-Histamine + H₁ Receptor → No Allergic Reaction
- → If antihistamines occupy the H₁ receptor, the allergic reaction does not occur.
The diagram mainly shows how antihistamines block the action of histamine
to prevent allergic reactions.
What is Asthma?
The term "asthma" comes from the Greek meaning, "to breathe hard."
Asthma is a chronic obstructive inflammatory disease of the airways
that causes acute bronchospasm and dyspnea. (shortness of Breath)
Asthma causes inflammation or swelling of the airways and produces
thick.
Inflammation then leads to constriction of the muscles around the
airways, causing the airways to become narrow. This narrowing is
also referred to as bronchospasm.
Symptoms of Asthma
- Dyspnea
- Chest Tightness
- Wheezing
- Night Awakening
- Coughing
Types of Asthma
Allergic Asthma: Allergic asthma is caused by
allergens. substances capable of causing an allergic reaction.
Causes of Allergic Asthma:
- The causes of allergic asthma are wide ranging. At the top of the list are specific allergens, such as pet dander, pollen and dust mites.
- Pollutants, wood dust, smoke, irritants, chemicals, viral infections, bacteria, stress, emotion and exercise are other frequently diagnosed causes.
Intrinsic Asthma: Intrinsic asthma is not likely to
develop in children; its typical onset occurs after age 40.
Possible causes of intrinsic asthma include respiratory irritants
such as perfumes, cleaning agents, fumes, smoke and cold air,
upper respiratory infections and GERD.
Nocturnal Asthma: Nocturnal or sleep-related, asthma
affects people when they are sleeping.
Occupational Asthma: Occupational asthma occurs
directly as a result of breathing chemical fumes, wood dust, or
other irritants over long periods of time.
Childhood Allergic Asthma: Most childhood asthma is
considered an allergic type of asthma. Childhood asthma occurs
more often in young boys than girls. Continued exposure to
cigarette smoking can irritate the respiratory tract and make
infants and children particularly vulnerable to allergic asthma.
- In simple terms: Juvenile asthma refers to asthma in children and teenagers, and childhood allergic asthma is a type of juvenile asthma that is mainly triggered by allergens. In other words, childhood allergic asthma is actually one specific form of juvenile asthma.
Prevention & Treatment of Asthma
- Asthma cannot be cured, but it can be controlled with proper asthma management.
- The first step in asthma management is environmental control.
- The second step is to monitor lung function.
- The third step in managing asthma involves the use of medications. There are two major groups of medications used in controlling asthma: anti-inflammatories (corticosteroids) and bronchodilators.
Triggering Factors of Asthma
The most common triggers of asthma are:
- Viral respiratory infections, such as influenza (the flu) or bronchitis.
- Bacterial infections, including sinus infections.
- Allergic rhinitis.
- Irritants, such as pollution, cigarette smoke, perfumes, dust, or chemicals.
- Sudden changes in either temperature or humidity, especially exposure to cold air.
- Allergens, for people with allergies.
- Emotional upsets, such as stress.
- Exercise etc.
Treatment & Management of asthma
Asthma cannot be cured, but it can be controlled with proper
asthma management.
Medications: There are seven major classes of asthma
medications-
1. Beta-agonists
- a. Short acting bronchodilator (SABA)
- b. Long acting bronchodilator (LABA)
2. Steroidal anti-inflammatories drugs
3. Non-steroidal anti-inflammatories Drugs
4. Xanthines
5. Anticholinergics
6. Leukotriene receptor antagonists Ex: Montelukast (Monas by
ACME)
7. Anti-allergic (Antihistamines)
Note:
- SABA = Short-Acting Beta-2 Agonist
- LABA = Long-Acting Beta-2 Agonist
These are classes of bronchodilators used to treat asthma and other
respiratory conditions:
- SABA (e.g., salbutamol/albuterol) provides quick relief by relaxing airway muscles — often used as a rescue inhaler.
- LABA (e.g., salmeterol, formoterol) provides long-term control and is used as maintenance therapy, not for immediate symptom relief.
Respiratory and Allergy Terminology
Allergen: A substance that is capable of producing an allergic
reaction.
Allergic rhinitis:
Allergic rhinitis more commonly referred to as
hay fever, is an inflammation of the nasal passages caused by allergic reaction
to airborne substances. Allergic rhinitis may be seasonal, perennial
& occupational. The symptoms include nasal congestion, clear runny
nose, itching in nose, sneezing etc.
Mast cells:
The allergy causing cells that release chemicals like histamine. They
are very close to basophil granulocyte (a WBC) and are widely found in
skin, lung mucosa, digestive tract, mouth, conjunctiva & nose.
Drug rash:
A skin eruption (redness or spotting), usually an allergic reaction,
that is caused by a particular drug. Generally a drug rash that is a
sensitivity reaction does not occur the first time the drug is taken,
but the effect is observed with subsequent uses.
Hay fever: An acute allergic reaction to pollen that is usually
seasonal and is marked by sneezing, nasal discharge & congestion,
itching and watering of the eyes.
Anticholinergic:
Inhibiting or blocking the physiological action of acetylcholine at a
receptor site used to control intestinal spasm. Anticholinergics can
increase the heart rate, dilate the pupils for examination of the eyes,
dry mouth etc.
Idiopathic:
Of, relating to, or designating a disease having no known cause.
Prophylaxis:
Prevention of or protective treatment for disease.
Pruritus:
An itching sensation or feeling that makes a person scratch.
Sedative:
A drug that can produce sedation (relaxed, often sleepy state).
Dizziness:
A sensation of faintness or an inability to maintain normal balance in a
standing or seated position.
Drowsiness:
A state of impaired awareness associated with a desire to sleep.
Vasomotor rhinitis: Inflammation of the nose (rhinitis) due to
abnormal neuronal (nerve) control of the blood vessels in the nose.
Vasomotor rhinitis is not allergic rhinitis.
Types of Inhalers
There are two types of inhalers:
- MDI: Metered Dose Inhaler
- DPI: Dry Powder Inhaler
MDI (Metered Dose Inhaler): This is a pressurized inhaler
that delivers a specific amount of medication with each puff. It
releases the medicine in the form of aerosol mist, and the user
must coordinate pressing the inhaler and inhaling at the same
time. It's commonly used for asthma and other respiratory
conditions.
DPI (Dry Powder Inhaler): This type of inhaler delivers
medication in a dry powder form. The patient needs to inhale
deeply and forcefully to draw the medicine into the lungs. It
doesn’t use any propellant, making it breath-actuated and often
easier to use for some patients.
Both types are effective for delivering medicine directly to the
lungs, and the choice depends on the patient's condition and
ability to use the device properly.
Cough Preparations
A cough, is a voluntary or involuntary act that clears the throat and
breathing passage of foreign particles. microbes, Imitants, fluids, and
mucus; it is a rapid expulsion of air from the lungs. Coughing can be
done deliberately or as part of a reflex.
Cough Types: Basically 2 Types
- a. Wet cough, also called a productive cough, is a cough that typically brings up mucus.
- b. Dry cough is a cough that doesn't bring up mucus. It may feel like you have a tickle in the back of your throat triggering your cough reflex, giving you hacking coughs.
What causes a cough?
A cough can be caused by several conditions, both temporary and
permanent.
a. Clearing the throat
Coughing is a standard way of clearing your throat. When your
airways become clogged with mucus or foreign particles such as smoke
or dust, a cough is a reflex reaction that attempts to clear the
particles and make breathing easier.
Usually, this type of coughing is relatively infrequent, but
coughing will increase with exposure to irritants such as smoke.
b. Viruses and bacteria
The most common cause of a cough is a respiratory tract infection,
such as a cold or flu.
Respiratory tract infections are usually caused by a virus and may last
from a few days to a week. Infections caused by the flu may take a
little longer to clear up and can sometimes require antibiotics.
c. Smoking
Smoking is a common cause of coughing. A cough caused by smoking is
almost always a chronic cough with a distinctive sound. It's often known
as a smoker's cough.
d. Asthma
A common cause of coughing in young children is asthma. Typically,
asthmatic coughing involves wheezing, making it easy to identify.
Asthma exacerbations should receive treatment using an inhaler. It's
possible for children to grow out of asthma as they get older.
e. Medicines
Some medications will cause coughing, although this is generally a rare
side effect. Angiotensin-converting enzyme (ACE) inhibitors, commonly
used to treat high blood pressure and heart conditions, can cause
coughing.
Two of the more common ones are:
- Zestril (lisinopril)
- Vasotec (enalapril)
The coughing stops when the medication is discontinued.
f. Other conditions
Other conditions that may cause a cough include:
- damage to the vocal cords
- postnasal drip
- bacterial infections such as pneumonia, whooping cough, and croup
- serious conditions such as pulmonary embolism and heart failure
Another common condition that can cause a chronic cough is
gastroesophageal reflux disease (GERD). In this condition, stomach
contents flow back into the esophagus. This backflow stimulates a reflex
in the trachea, causing the person to cough.
Some important definition
1. Mucus: Mucus is a slippery secretion of the lining of the
mucous membranes in the body. It is a viscous colloid containing
antiseptic enzymes (such as lysozyme) and immunoglobulin. Mucus is
produced by goblet cells in the mucous membranes that cover the surfaces
of the membranes. It is made up of mucins and inorganic salts suspended
in water.
2. Phlegm: Phlegm is sticky fluid produced by the respiratory
system, excluding that from the nasal passages, and particularly that
which is expelled by coughing (Sputum). In the mouth it mixes with
saliva (spit) to become sputum, which is then expectorated: phlegm plus
saliva equals sputum, which is commonly studied by doctors to give signs
of what is happening in the lungs.
3. Chesty cough: In chesty coughs a patient will expel phlegm and
mucus when coughing.
4. Sputum: Sputum is matter that is coughed up from the
respiratory tract, such as mucus or phlegm mixed with saliva and then
expectorated from the mouth.
5. Expectorant: This helps when one has thick chest congestion,
which he is unable to cough up. It loosens thick mucus, making it easier
to cough up. They increase the volume and decrease the thickness of
secretions in the airways.
6. Mucolytic agent: Mucolytic agent is any agent, which dissolves
thick mucus usually used to help relieve respiratory difficulties.
(Hydrolyzing, glycosaminoglycans: tending to break down/lower the
viscosity of mucin-containing body secretions/components). The viscosity
of mucous secretions in the lungs is dependent upon the concentrations
of mucoprotein, the presence of disulfide bonds between these
macromolecules and DNA.
7. Allergic rhinitis: Allergic rhinitis, more commonly referred
to as hay fever, is an inflammation of the nasal passages caused by
allergic reaction to airborne substances.
Allergic rhinitis may be seasonal, perennial & occupational. The
symptoms include nasal congestion, clear runny nose, itching in nose,
sneezing etc.
8. Antitussive: An agent which is capable of relieving or
suppressing coughing.
9. Decongestant: A decongestant or nasal decongestant is a type
of drug which is used to relieve nasal congestion.
10. Edema: It is the swelling of soft tissues as a result of
excess fluid accumulation.
11. Expectorant: A medication that helps to bring up mucus and
other material from the lungs, bronchi, and trachea. (Ex-out of +
Pectus-chest)
12. Mucopolysaccharide: A group of polysaccharides which contain
hexosamine in their structure. Mucopolysaccharides form many of the
mucins when dispersed in water. (Mucin is a glycoprotein).
13. Phlegm: It is the thick, sticky, stringy mucus secreted by
the mucous membrane of the respiratory tract, as during a cold or other
respiratory infection.
14. Pneumoconiosis: Any disease of the lungs caused by chronic
inhalation of dust, usually mineral dusts of occupational or
environmental origin. The principal agents include coal, cotton, sand,
and asbestos (a fibrous incombustible magnesium & calcium silicate).
15. Sputum: Matter coughed up and usually ejected from the
trachea, bronchi & lungs through the mouth. (Saliva + Phlegm/Mucus =
Sputum).
16. Vasomotor rhinitis: Inflammation of the nose (rhinitis) due
to abnormal neuronal (nerve) control of the blood vessels in the nose.
Vasomotor rhinitis is not allergic rhinitis.
Diagnostic Tests for Respiratory System Diseases
To diagnose and confirm respiratory system diseases, doctors use a
variety of diagnostic tests. These tests help detect infections,
structural problems, airway obstruction, and lung function issues at
an early stage. The most common tests include:
| Sl. No | Test Name | Purpose |
|---|---|---|
| 1 | Chest X-ray | Provides images of the lungs, airways, heart, and chest wall; helps detect infections, tumors, or fluid accumulation. |
| 2 | Computed Tomography (CT) Scan | Detailed imaging of the lungs and airways; identifies tumors, blood clots, pneumonia, or other structural abnormalities. |
| 3 | Pulmonary Function Tests (PFTs) | Measures lung capacity, airflow, and gas exchange; used to diagnose asthma, COPD, or restrictive lung diseases. |
| 4 | Spirometry | A simple breathing test to assess how much air you can inhale/exhale and how fast; detects obstructive lung diseases. |
| 5 | Arterial Blood Gas (ABG) Test | Measures oxygen and carbon dioxide levels in the blood; evaluates lung function and gas exchange efficiency. |
| 6 | Sputum Culture & Sensitivity | Identifies bacteria, fungi, or other pathogens causing respiratory infections; guides antibiotic or antifungal treatment. |
| 7 | Bronchoscopy | Direct visualization of the airways using a flexible tube; detects tumors, blockages, or chronic infections. |
| 8 | Pulse Oximetry | Measures oxygen saturation in the blood; provides quick assessment of breathing efficiency. |
| 9 | Allergy Testing | Identifies allergic triggers that can worsen asthma or other respiratory conditions. |
| 10 | Chest MRI / Nuclear Imaging | Provides detailed images of lungs, airways, and surrounding structures; used in complex cases or tumor detection. |
FAQs
1. What is the difference between first-generation and
second-generation antihistamines?
First-generation antihistamines often cause drowsiness and sedation,
while second-generation antihistamines are less likely to cause these
side effects. Second-generation antihistamines are commonly preferred
for allergy treatment.
2. How do bronchodilators work in asthma treatment?
Bronchodilators relax the muscles around the airways, helping to open
them up and improve airflow to the lungs. They provide quick relief from
asthma symptoms and are often used in rescue inhalers.
3. What are the symptoms of respiratory diseases?
Symptoms of respiratory diseases vary but can include cough, shortness
of breath, wheezing, chest tightness, fatigue, and increased mucus
production. Severe cases may lead to respiratory failure.
4. What is the role of the lungs in respiratory diseases?
The lungs are responsible for oxygenating blood and expelling carbon
dioxide. Respiratory diseases often impair lung function, leading to
difficulty in breathing, reduced oxygen levels, and other complications.
5. What is the difference between restrictive and obstructive lung
diseases?
Restrictive lung diseases, like pulmonary fibrosis, reduce lung
expansion, leading to less air intake. Obstructive diseases, like asthma
and COPD, block airflow, making it harder to exhale.
6. How is respiratory disease diagnosed?
Respiratory diseases are diagnosed through physical exams, patient
history, chest X-rays, CT scans, pulmonary function tests (PFTs), and
blood tests to assess lung function and oxygen levels.
Conclusion
In conclusion, knowing the symptoms, treatment, and prevention of
respiratory diseases is very important. It helps you become more
confident as a Pharmaceutical Sales Representative. You can talk to
doctors more easily and share your company’s information clearly.
Whether you are new or still learning, this knowledge will give you a
strong foundation.
Sarwar Hossain ✅
I am a travel enthusiast and sports-loving person. Education: BBA & MBA in Accounting.