Persistent Cough
Overview of Persistent Cough
A persistent cough, also known as a chronic cough, is defined as a cough that lasts for eight weeks or longer in adults, or four weeks in children. It can significantly impact quality of life and may indicate an underlying health issue.
Causes
Several conditions can lead to a persistent cough, including:
- Asthma: A chronic inflammatory disease of the airways that can cause coughing, especially at night or early morning.
- Chronic Obstructive Pulmonary Disease (COPD): Includes emphysema and chronic bronchitis, often linked to smoking.
- Gastroesophageal Reflux Disease (GERD): Stomach acid that backs up into the esophagus can cause coughing.
- Infections: Prolonged respiratory infections like pneumonia
or tuberculosis can result in a chronic cough.
- Postnasal Drip: Excess mucus from the nose or sinuses drips down the throat, triggering a cough.
- Medications: Certain medications, particularly ACE inhibitors used for hypertension, can cause chronic cough as a side effect.
Symptoms
A persistent cough may be accompanied by other symptoms, depending on the underlying cause:
- Asthma: Wheezing, shortness of breath, and chest tightness.
- COPD: Increased mucus production, wheezing, and breathlessness.
- GERD: Heartburn, regurgitation, and sour taste in the mouth.
- Infections: Fever, fatigue, and chest pain.
Diagnosis
Diagnosing the cause of a persistent cough involves several steps:
- Medical History and Physical Exam: Evaluating symptoms, lifestyle factors, and a physical examination.
- Chest X-Ray or CT Scan: Imaging tests to look for lung abnormalities.
- Spirometry: A lung function test to diagnose conditions like asthma or COPD.
- Allergy Tests: Identifying potential allergic reactions contributing to the cough.
- Endoscopy: Examining the esophagus and stomach for signs of GERD.
Treatment
Treatment for a persistent cough focuses on addressing the underlying cause:
- Asthma: Inhalers (bronchodilators and corticosteroids) to reduce inflammation and open airways.
- COPD: Medications, pulmonary rehabilitation, and oxygen therapy.
- GERD: Lifestyle changes, antacids, and proton pump inhibitors (PPIs).
- Infections: Antibiotics for bacterial infections, antivirals for viral infections, and appropriate medications for tuberculosis.
Home Remedies
In addition to medical treatment, some home remedies may help alleviate a persistent cough:
- Hydration: Drinking plenty of fluids to thin mucus.
- Humidifiers: Adding moisture to the air can soothe irritated airways.
- Honey: Taking honey can help soothe a sore throat and reduce coughing.
- Avoiding Irritants: Reducing exposure to smoke, pollution, and allergens.
When to See a Doctor
Consult a healthcare provider if the cough:
- Lasts more than eight weeks.
- Is accompanied by unexplained weight loss, fever, or night sweats.
- Produces blood or has a barking sound.
- Is severe enough to interfere with sleep or daily activities.