Cough variant Asthma (CVA) is a type of asthma that is distinctly different from standard forms of the disease. Individuals with CVA have a dry cough that lasts for several months. Unlike other forms of asthma, CVA sufferers do not have any other traditional asthma symptoms. Patients with CVA have been found to have different biological reactions to certain tests than other asthmatic individuals. The exact cause of CVA is not known and the mechanisms in the body that cause the coughing are not clear. CVA is distinguished from other types of coughs because it must last for several months. There are a number of tests that can be used to measure the constriction of the airways as a person breathes. Tests like a methacholine challenge allow a doctor to monitor the performance of the lungs as oxygen is moved into and out of the body. Patients who have CVA tend to exhibit a much more sensitive reaction to triggers that can cause a person to cough. The treatment for CVA is almost identical to other traditional asthma treatments. Rescue inhalers and nebulizers are usually the first methods that are used to treat the problem. Bronchodilators are administered when symptoms occur. This causes the airways to relax. CVA patients most often see a reduction in the frequency and intensity of the dry coughs after a few weeks of treatment. Certain patients have difficulty using inhalers, however, because of an over sensitivity to the aerosols that are used. These patients can be prescribed oral steroids until inhaled medications can be tolerated. Part of the treatment of CVA involves the management of the factors that can cause a coughing episode to start. Many patients have a strong response to cold air and allergy causing substances like pollen. Exercise can trigger a coughing episode as well. Each person who has CVA must become aware of the factors that start a coughing attack. With proper medication, avoidance of damaging respiratory habits like smoking and careful daily management of the environment a person with CVA can lead a relatively normal life.