Hello, Thanks for using Healthcaremagic. I have gone through your query and I can understand your concerns. Probable diagnosis. : Seborrheic dermatitis Investigations needed : Skin scrapings under microscope. RBS(Random Blood Sugar) Plan of treatment : Topical and oral antifungals Outcome :Moderate to good. As per your description it seems that you are suffering from a skin condition called seborrheic dermatitis.Its a kind of fungal infection affecting seborrheic areas like scalp,buttock fold,infra mammary area . But before commencing the treatment we have to rule out some other skin diseases.I suggest you to consult a dermatologist to make a correct diagnosis.A good dermatologist can make a spot diagnosis with a hand lens, you might also need a microscope examination of your skin scrapings to confirm the diagnos. Check your blood sugar level to rule out diabetes. Treatment include oral and topical antifungals .Use ketoconazole containing shampoo if you have lesion on scalp.You can also take antihistamines like cetrezine to reduce itching. In unresposive cases you can opt for phototherapy but it is relatively more expensive. Hope this information helps. Regards. Dr.Shinas Hussain