Cough

A cough is a natural reflex that helps to clear the airways of mucus, irritants, and other foreign particles. It is a common symptom of many respiratory conditions, including colds, flu, bronchitis, pneumonia, and asthma.

Types of Cough

• Acute cough: A short-term cough that lasts less than 3 weeks, often caused by a viral infection such as a cold or flu.
• Chronic cough: A long-term cough that lasts more than 8 weeks, often caused by underlying conditions such as asthma, chronic obstructive pulmonary disease (COPD), or gastroesophageal reflux disease (GERD).
• Productive cough: A cough that brings up mucus or phlegm, often indicating a respiratory infection.
• Non-productive cough: A dry, hacking cough that does not bring up mucus or phlegm, often caused by irritation of the airways.

Causes of Cough

A cough can be caused by a variety of factors, including:

• Respiratory infections such as colds, flu, bronchitis, and pneumonia
• Allergies to dust, pollen, or other substances
• Asthma and chronic obstructive pulmonary disease (COPD)
• Gastroesophageal reflux disease (GERD)
• Smoking and exposure to secondhand smoke
• Air pollution and environmental irritants
• Medications such as ACE inhibitors and beta blockers

Symptoms of Cough

The symptoms of a cough can vary depending on the underlying cause, but may include:

• A dry, hacking cough or a productive cough that brings up mucus or phlegm
• Chest tightness or discomfort
• Shortness of breath or difficulty breathing
• Fatigue and weakness
• Headaches and facial pain
• Sore throat and hoarseness

Diagnosis of Cough

A diagnosis of a cough is typically made based on a physical examination, medical history, and diagnostic tests such as:

• Chest X-rays or computed tomography (CT) scans to evaluate the lungs and airways
• Pulmonary function tests (PFTs) to assess lung function
• Blood tests to check for infections or inflammation
• Allergy testing to identify potential allergens

Treatment of Cough

The treatment of a cough depends on the underlying cause, but may include:

• Over-the-counter (OTC) medications such as cough suppressants and expectorants
• Prescription medications such as antibiotics, bronchodilators, and corticosteroids
• Lifestyle changes such as quitting smoking, avoiding allergens, and staying hydrated
• Alternative therapies such as acupuncture and herbal remedies

Complications of Cough

If left untreated or poorly managed, a cough can lead to complications such as:

• Respiratory failure and pneumonia
• Asthma and chronic obstructive pulmonary disease (COPD)
• Gastroesophageal reflux disease (GERD) and esophagitis
• Sleep disturbances and fatigue
• Social and economic burdens due to lost productivity and healthcare costs

Prevention of Cough

To prevent a cough, it is recommended to:

• Get vaccinated against flu and pneumonia
• Avoid smoking and secondhand smoke
• Use allergy-proof bedding and avoid allergens
• Stay hydrated and get plenty of rest
• Practice good hygiene such as washing hands frequently

Frequently Asked Questions (FAQs)

What is a cough?
A sudden expulsion of air from the lungs.

Why do people cough?
To clear irritants from the airways.

What are common causes of cough?
Infections, allergies, asthma, and smoking.

Can a cough be contagious?
Yes, if caused by an infectious disease.

How long does a cough typically last?
Varies, but usually less than 3 weeks.

When should I see a doctor for a cough?
If it persists or is severe.

Can a cough be a sign of a serious condition?
Yes, such as pneumonia or lung cancer.

How can I relieve a cough at home?
With rest, fluids, and over-the-counter medications.

Are there different types of coughs?
Yes, dry, wet, and productive coughs.

Can children have different cough symptoms than adults?
Yes, such as croup or whooping cough.