Thank you for your query.
Use of steroids
is contraindicated in chicken pox
. The scabs of chicken pox do not need any treatment and they do not get infected if hygiene is maintained. I suggest that you consult a doctor and in case there is infection then systemic antibiotic will be required instead of application of local medication.
I hope I have answered your query to your satisfaction.
Wishing your son an early recovery.
Rajiv K Khandelwal