A cough is the body’s way to help clear the airways of irritants and to prevent infection. Cough is not a disease in itself, but a symptom of an underlying medical condition.
Treatment to get rid of a cough fast depends on the cause and whether the cough is acute or chronic. Common causes include the common cold, COVID-19, whooping cough, bacterial or viral infections, asthma, pneumonia, smoking, COPD, GERD, and others.
If the cough is not serious, home remedies may help get rid of a cough fast, such as:
- Staying hydrated
- Gargling with warm saltwater
- Drinking tea with honey
- Cough lozenges
- Lozenges are not recommended for young children; they can be a choking hazard
- Using a mentholated vapor rub to help open airways
- Inhaling steam in a shower before bed (caution: steam can worsen cough in people who have asthma)
- Using a humidifier (caution: if cough is due to allergies to dust mites or mold, too much moisture can make it worse)
Other home remedies to help relieve cough include:
- Don’t smoke
- Avoid allergens such as pollen, dust, animals, or mold
- Avoid inhaled irritants such as smoke, dust, and other pollutants
- For GERD: Avoid foods that increase reflux, avoiding meals before lying down, elevating the head while sleeping
- Wash bedding at least once/week in hot water to keep dust mites in check if cough is due to allergies
Medical treatment to get rid of a cough may include:
- Over-the-counter (OTC) cough medicines containing guaifenesin and/or dextromethorphan (available in cough syrups and in tablet form)
- Decongestants such as pseudoephedrine (Sudafed), antihistamines such as diphenhydramine (Benadryl), or nasal inhalers like ipratropium bromide (Atrovent) for postnasal drip
- Antibiotics for infection caused by bacteria such as bacterial pneumonia and bronchitis
- Inhaled bronchodilators and inhaled steroids to treat asthma and COPD
- Famotidine (Pepcid), cimetidine (Tagamet), ranitidine (Zantac) omeprazole (Prilosec, Prilosec OTC), lansoprazole (Prevacid, Prevacid 24-Hour), rabeprazole (Aciphex), pantoprazole (Protonix), esomeprazole (Nexium) to treat gastroesophageal reflux disease (GERD)
- If cough is caused by an ACE inhibitor, your doctor may switch your medicine
- Never stop taking a prescribed medication without first talking to your doctor
- Pain relievers (analgesics) to treat the pain caused by coughing
What Are Symptoms of a Cough?
A cough is a symptom in itself and may be accompanied by other cold symptoms, such as:
- Sore throat
- Postnasal drip
- Runny or stuffy nose
- Hoarseness
- Heartburn
- Unpleasant taste in the mouth
What Causes a Cough?
Causes of cough include:
- Infections
- Common cold (viral infection)
- Coronavirus 2019 (COVID-19)
- Bacterial or fungal infections
- Pneumonia
- Whooping cough (pertussis)
- Smoking
- Most common cause of chronic cough
- Postnasal drip
- Allergies (allergic rhinitis)
- Sinus infection
- Lung conditions
- Asthma
- Chronic obstructive pulmonary disease (COPD), which includes chronic bronchitis and emphysema
- Interstitial lung disease
- Lung cancer
- Gastroesophageal reflux disease (GERD)
- Certain medications such as ACE inhibitors
- Inhalation of foreign objects into the lungs (usually in children)
- Sarcoidosis
- Congestive heart failure
How Is a Cough Diagnosed?
The cause of a cough is diagnosed with a history and physical exam, and tests such as:
- Lung imaging
- Chest X-ray
- Chest computerized tomography (CT) scan
- Lung function tests
- Acid reflux testing
- pH probe
- Upper endoscopy
- Swab of inside the nose to test for COVID-19
- Allergy skin tests
- Lab tests of phlegm that is coughed up
https://www.uptodate.com/contents/chronic-cough-in-adults-beyond-the-basics?topicRef=16896&source=see_link
https://www.aafp.org/afp/2007/0215/p567.html
https://www.nhlbi.nih.gov/health-topics/cough