<s>[INST] I developed a red rash in the crease of my butt crack from the top all the way down on the inside of the skin folds and have had for about 3 days! The color is bright red and no blisters but feels hot and sore. I looks like Intertrigo and I have applied OTC hydrocortisone cream and neosporin but not much improvement. I just swithced today and will try lotrimin Ultra cream antifungal. Any suggestions docs?. I am a male 51 and fairly athletic 170 lbs 6-1. I may of kept my work out clothes on to long after working out and moisture remained in the undergarments after working out for a few hours. Help would be highly appreciated. [/INST] hi yes u are suffering from intertrigo.it is a bacterial and fungal infection.use of antibiotic twice daily ,antifungal flucanazole weekly twice and atarax 25 mg at night and application of fucidin h ointment in the morning and nizral ointment in thre night can cure the condition.after the treatment apply candid dusting powder in the folds to prevent recurrences </s>