Thanks for the query,
He might be suffering from inmpetigo.
Another possibility is igA dermatitis
A photograph eould have helped me.
He might require treatment with antibiotics or steroids
depending upon the condition.
Give him an antihistamine tablet.
This will give him some relief.
Please meet a dermatologist
for exact diagnosis.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.