Cough-variant asthma is a form ofasthmain which the primary symptom is a dry, non-productive cough.
The symptoms differ from symptoms of otherforms of asthma.
Cough-variant asthma can be difficult to diagnose because chronic dry coughing can be attributed tomany conditions.
Verywell / Ellen Lindner
The timing of the severe coughing episodes could be a clue that asthma is involved.
In some cases, cough-variant asthma may be an early sign of the onset of classic asthma.
Children are more likely to be affected by cough-variant asthma than adults.
It is possible that cough-variant asthma is a transitional step in the march.
With that said, not everyone who has cough-variant asthma will develop classic asthma.
Diagnosis
Cough-variant asthma can be misdiagnosed, and it is a difficult diagnosis to confirm.
Other tests may be considered, as needed.
Pulmonary Function Tests
For adults and children over age 5, the first PFT used is calledspirometry.
There are downsides to spirometry.
If spirometry test results are uncertain with a bronchodilator, another test called abronchoprovocation challengemay be conducted.
If the symptoms resolve or improve under treatment, it can help support a diagnosis of this condition.
If the symptoms are mild and intermittent, an albuterol inhaler may be all that is needed.
If the symptoms are persistent, aninhaled corticosteroidlike fluticasone may be used on a daily basis to reduce airwayinflammationhyperresponsiveness.
This is especially true if coughing fits are severe.
Once the symptoms are fully resolved, daily inhaled corticosteroids may be continued to prevent them from returning.
A healthcare provider can then monitor your condition and determine how long daily treatment is needed.
Fujimura M.Pathophysiology, diagnosis and treatment of cough variant asthma.Rinsho Byori.2014;62(5):464-70.
2017;135(5):428-33. doi:10.1590/1516-3180.2017.0041250517
