Probably you are suffering from fungal infection. Fungus thrives on warm and moist skin like groin and under scrotum. Contributing factors are high humidity, heat, perspiration, diabetes mellitus, obesity, friction from clothes. Fungal infection is contagious. Transmission occurs via infected towels, linens, and clothing. You can avoid repeated infection by lifestyle and hygiene modifications only. Advice 1. Use cream containing clotrimazole, steroid and antibiotic such as Lobate GM cream thrice daily locally 2. Fluconazole 150 mg twice weekly by mouth for 2 months 3. Use ketoconazole or fluconazole dusting powder in groin area 4. Wear loose cotton undergarment 5. Avoid sharing clothing, towels, or bed sheets 6. Wash clothes and bed sheets in hot water 7. Do not scratch too much. It will cause skin infection and blackening of skin 8. Take high protein diet such as eggs and cheese to boost immunity 9. Investigation – blood sugar (fasting & postprandial) I hope this information will help you. I will be happy if you ask another question Thanks