Thanks for the query.
you might be suffering from recurrent folliculitis
It is a bacterial infection.
Another possibility is milliria or prickly heat
Use a talcum powder,
if there is no response, Please meet a dermatologist
and discuss regarding this.
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.