Hi dear, I understand your concern
A sudden onset high grade
fever along with rash is most likely a viral illness.
If he do not have any other symptoms, is playful when fever comes down, and taking feeds, just give him
paracetamol 3-4 times a day. Let him take rest and drink plenty of fluids. If the rash is itchy, apply
calamine lotion over there 2-3 times a day. If bothersome, I used to give antihistamines like
hydroxyzine or
levocetirizine to relieve the itching.
If he is not getting better in 2-3 days, or becomes lethargic or not at all taking feeds, kindly take him to doctor.
Hope I have answered your query
Let me know if I can assist you further
Dr Muhammed Aslam, Paediatrician