Hello. Welcome to ask the doctor.
I understand your concern.
As per details, there are following possibilities for the symptoms you mentioned-
1) Pedrous dermatitis- also known as insect bite reaction. It is characterised by red colored painful eruptions noticed spontaneously and suddenly usually when one gets up in the morning.
2)Herpes zoster : it is viral infection characterised by grouped fluid filled lesions on erythematous base in a dermatome. It may be preceeded by prodromal symptoms of burning sensation or pain or itch.
I will advise you to visit your doctor so that he can examine your son and give you prescription.
You can share my opinion with him.
I hope it helps.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.