What are the resons of coughing?

Asthma heyfever GERD. The most common reasons for chronic or recurrent cough include asthma (especially if the cough occurs with exercise or exposure to allergens), heyfever or allergic rhinitis which causes a post nasal drip or gerd (gastoesophageal reflux disease) with acid coming up from your stomach. Your doctor can help figure out which is the cause and the best treatment. If necessary ask for allergist referral.
Throat or chest sx. The top causes of chronic cough are asthma, post nasal drip, and gastroesophageal reflux. Although it might seem like it would be obvious, it is often difficult to tell which is the cause without testing.