<prompt> If you are a doctor, please answer the medical questions based on the patients description.i have a rash that started under my arms. now is down my arm, under breast, stomch, thighs and inside top part of calf . it itches and gets worse with heat . can you help? no puss. just red bumps that get bigger after itching.  <response>: His completely understand your concern and I hope I am able to help you for the same. You seem to be having extensive fungal infection. First some general precautions: Wear cotton clothes and undergarments in order to reduce the sweating. Do not apply any kind of oils moisturizing lotion over the affected area. Just give warm saline compresses over the affected area twice a day and then apply an antifungal cream. Something like clotrimazole cream helps in most cases. Also, you will need to take oral antifungals 2 weeks. In case of severe itching, take some antihistamine once a day. If inspire of the above measures, the lesions continue to persist or increase, then you might have to see a dermatologist for proper assessment and management. Hope it helps Best wishes for a speedy recovery Chat Doctor. 