Welcome and thanks for posting your query to HealthcareMagic.
As per your query you have the problem of Bumps on butt crack and rashes on stomach, chest, hips.
First of all kindly relax yourself and don't get depressed by the skin condition you are suffering from.
As most of the skin conditions are totally simple and benign conditions. The only problem is of proper diagnosis. As you have gone for the biopsy
of the same so in next few days you would be able to know the exact cause of the problem and then accordingly the best treatment for it. Even if think of something then eczema
or related thing are quite simple of the things ad are very well treatable.
Till the time you get your biopsy report you keep your self away from hot and humid climate, maintain good hygiene and nutrition, Wear cotton clothe s and cotton undergarments. Don't try to scratch or rub the area as can lead to further aggravation of the problem.
Keep your moral high for the simple skin problem which are very well treatable.
"Wish you good health and early recovery from the problem"
Dr Sanjay Kumar Kanodia