The symptoms seem to indicate that you have contact with dermatitis, which is a skin disease caused by an allergic reaction to contact matter that causes redness, itching, swelling, swelling, and so forth, often in people who wear diapers or use certain cosmetics or local drugs.
Doctor, you've got skin rashes, you've got skin swelling, you've got irritations, you've got discomforts, you've even got some dots on your skin, can you tell me what's wrong?