Hello, Thank you for posting on HCM. It seems you have got intertrigo. Intertrigo is an infection which occurs over any opposing skin surfaces , mostly seen over groin folds. Its caused due to bacterial or sometimes fungal infection. Overweight can increase the friction and thus predispose to intertrigo. I would suggest you oral antibiotics and antifungal tablets for few days along with application of antibiotic cream like fusidic acid and antifungal cream like clotrimazole twice a day for few weeks. Use dusting powder containing clotrimazole on daily basis to keep area dry and reduce friction. Try to reduce weight and maintain hygiene. Avoid tight undergarments and use cotton garments as far as possible. Hope this will help you Take care Dr Hardik Pitroda