Cough Variant Asthma (CVA): Symptoms, Diagnosis & Treatment

Cough variant asthma (CVA) is a type of asthma that is characterized by chronic cough as the main symptom, without the typical symptoms of asthma such as wheezing, shortness of breath, or chest tightness. CVA is often misdiagnosed as other respiratory conditions, such as chronic bronchitis, allergies, or post-nasal drip, which can delay proper treatment.

Symptoms of CVA:

- Chronic dry cough, especially at night or in the early morning

- Wheezing, shortness of breath, or chest tightness may also occur, but are not always present

- Cough may be triggered by exercise, cold air, dust, or other allergens

Diagnosis of CVA:

- Detailed medical history and physical examination

- Spirometry (lung function test) to assess airflow and identify asthma

- Bronchial provocation testing to confirm asthma if spirometry is normal

Treatment of CVA:

- Inhaled corticosteroids (ICS) are the primary treatment for CVA

- Long-acting beta-agonists (LABAs) may be added if ICS alone is not effective

- Leukotriene modifiers or other asthma medications may also be prescribed

Management of CVA:

- Avoid triggers that worsen the cough

- Maintain good hydration to reduce airway irritation

- Use a humidifier to add moisture to the air

- Practice relaxation techniques to manage stress

When to Seek Medical Attention:

- If your cough is severe or persistent, especially at night

- If you have difficulty breathing or experience wheezing or chest tightness

- If your cough does not improve with over-the-counter medications

It's important to see a doctor if you have a chronic cough to get a proper diagnosis and appropriate treatment. Early diagnosis and management of CVA can help improve symptoms and prevent complications.