Causes of 4 month cough besides asthma? right lung pain but no fever. i don't smoke.

Cough: There are many things that could cause a cough. Asthma, reflux, allergies, infection, tumor are just a few. If you have had a cough for that long, please get in and have it evaluated. good luck.

Many: It is possible allergies are causing this persistent cough. Also any irritants like smoking, whether primary smoking or 2nd hand smoke. Severe reflux that is irritating the airway can be a cause.