We had her tested this spring for allergies and none were found. This cough usually is accompanied with a stuffy nose, which none of the over the counter decongestants work, and none of the allergy meds work to decongest either. Rarely has there been a fever. The history seems to be that she had a few ear infections as a baby, had croup(sp) at 9 months of age during the winter, and has since had these symptoms every winter. We've also tried humidifiers at night time, which don't seem to work either(cool mist ones). The children's musinex seems to work a little bit. If anyone has any other ideas, please help.