The onset of this illness following such a brief exposure is puzzling. Hard to know if the rash, swollen airways and difficulty swallowing were attributable to a reaction to the Zithromax® (azithromycin) or caused by the classroom exposure. It is possible that what you’ve had is what is called urticaria with angioedema. This is thought to be an allergic reaction but the cause of the allergy is often not found. The problem is often acute and brief, but may last up to 6 weeks or longer. If this is the case, you may have to be treated with oral steroids, such as prednisone for about a week.
You may have to see an allergist but should first go back to your doctor and report your continuing symptoms and express your concerns. In addition, you should have a chest x-ray to make sure you don't have an allergic pneumonia.
IF YOU CAN LOOK UP VOCAL CORD DYSFUNCTION, SOME PEOPLE CAN HAVE THIS CONDITION AND THINK THAT THEY HAVE ASTHMA, IT CAN COME ON SUDDENLY. iTS NOT A WELL KNOWN ILLNESS, AND LOADS OF PEOPLE END UP IN THE ER EVERY YEAR WITH IT. PLEASE TYPE IN THE JEWISH RESEARCH MEDICAL CENTER IN DENVER. ALLERGIES, ASTHMA, GASTRO REFLUX AND INDUCE THE SYMPTOMS. THE RASH THAT YOU DEVELOPED COULD HAVE BEEN TO DO WITH IMPETIGO, I DON'T THINK I SPELT THAT RIGHT, BUT IS HIGHLY CONTAGIOUS IN SCHOOLS.
HOPE THIS HELPS