Hello and welcome to healthcaremagic I would keep a possibility of Fungal infection of the groin folds (Tinea cruris) along with bacterial folliculitis of the lower abdomen and buttocks. Groin folds are a common site for fungal infection specially in hot and humid weather in summer, which is conducive for fungus growth. If I was the treating doctor I would suggest you an OTC topical antifungal cream e.g clotrimazole cream, to be applied twice daily in the groin folds. An OTC antihistamine e.g cetrizine 10 mg once daily would provide symptomatic relief from itching. Moreover, the perineal and pubic region is rich in resident bacterial flora. Sweating and humidity together with friction and rubbing provide a portal of entry into the skin, through the hair follicles, thus giving rise to Folliculitis. For the folliculitis, I would suggest an empirical course of an oral antibiotic for a week. My choice of oral antibiotic would have been either: Amoxycillin 500mg in combination with clavulanic acid 125 mg, thrice daily for a week OR Cephalexin 500 mg thrice daily for a week OR Cefadroxil 500 mg twice daily for a week. An OTC topical antibacterial e.g 2% Mupirocin, is to be applied over folliculitis lesions, twice daily. Bathing twice daily, wearing loose fitting cotton clothes, weight control and using an antifungal dusting powder regularly to make the area unfavourable for fungal growth are few general measures that would help in preventing recurrence. Regards