collection in the areas, keep the areas clean, maintain good personal hygiene, wear lose comfortable clothes. Apply calamine lotion at the sites.
Only a clinical examination would be able to give the cause of your symptoms.
Consult a skin specialist for your complaints and discuss whether this is normal or whether a demyelinizing agent would help in your case. Also discuss with your specialist about microdermabrasion and laser therapy in your case.
Let us know about how you are doing and if you have any other doubts.