I have an 11 year old girl who is 70 pounds and has been having coughing fits for the past 6 days. she has been reluctant to participate in gym class. she has also had trouble participating in her entire ballet class without feeling tired or starting to cough. in the past she has had five upper respiratory infections and associated coughing in the past 18 months. she describes her cough as dry and says that she wakes up more than once a night due to the coughing.