I think its a fungal infection, or any skin infection or disease. Do not out or use anything. and make sure you dont touch these. also make sure if you touch , then dont touch those hand to others. donot let other touch you. keep the skin clean. and show to to a skin specialist, it will be ok
avoid sun light and heat
From these symptoms scabies should be ruled out. It is an infestation of the skin with the Sarcoptes scabiei mite. It is characterized by intense itching, usually at night and by small insect-type bites lesions on the skin. Diagnosis of scabies is made by scraping the skin and viewing the material under a microscope to see the characteristic mite or eggs.
I hope it helps. Take care and regards.