I have cough variant asthma, it's treated with the same medications as regular asthma, only with lots of cough suppressants(tessalon perles, robutussin w/ codeine, both things I have at any given time at home for coughing), also use a humdifier in the room(helps tremendously). I find albuterol makes things worse but xopenex often does the trick. Really this is all that can be done, control the asthma itself & allergies, & then add cough suppressants. Tessalon perles are nice b/c they are non addicting.