When I was small, I was like that too. The doctor said I have 氣管敏感, but I kept on coughing so it turned to 哮喘. So you have to be very careful cuz if 氣管敏感 continues, it will definitely turn into 哮喘. I've tried everything to cure my 哮喘, like the other mom said "double boil orange", crocodile meat soup, at last my mom was superstitious and she started to buy 7 black goldfishes at home but all of those didn't work. How I got cured was after I moved to Canada. The enviroment and air in Canada is good so before I get to 12 yrs old, it was cured.