My 11 yr old has a chronic loose cough with yellow phlegm, low grade fever at night, minor nasal drainage, and strawberry tongue. She has been on the current round of antibiotic four days with with diagnosis of strep throat although rapid strep test was negative. no change. Dry cough started 2.5 months ago and she has been given two other rounds of antibiotics and prednisone. She is also taking albuterol inhaler as allergist felt the cough was caused by asthma. I'm concerned she may have something that has been missed and I'd like to know if you agree with her diagnoses.