<s>[INST] my 1 year old son had an ear infection a week ago & after 6 days of amoxicillin he was switched to azithromycin, after 1 dose of that I noticed a rash on mainly his stomach/chest, little on the arms & groin. I stopped all meds & 24 hrs later he has a more intense color (reddish-purple) on his right cheek & earlope. It is smooth & warm to touch. HELP! [/INST] Hello, Azithromycin can cause a skin side effect as red-purple rashes, skin pain blistering, peeling of skin. In your case, if rashes associate with a fever of three to four days, then it may be some viral infection. Still, the possibility of allergic reaction by azithromycin cant be ruled out. An allergic reaction usually associated with more symptoms as fever, sore throat, breathing difficulty. Hope I have answered your query. Let me know if I can assist you further. </s>