Hello and welcome to HCM, A itchy rash in the perineal region and anal region suggests a fungal infection. Presence of bumps appearing as inflammaed hair follicles could be folliculities. However, before using any ointment a clinical examination clinical examination of the lesions is needed. These lesions can howver, due to other reasons. The above mentioned possibilities are the most probable ones on the basis of clinical details provided by you. Once, the infectious causes are ruled out, a biopsy of the lesion may be required. A number of skin diseases involve the perineal and anal skin also e.g. psoriasis, lichen planus, etc. Many sexually transmitted diseases are also associated with rash. A high risk sexual behavior is associated with these infections. Consult your dermatologist and venerologist for clinical examination, relevant investigations and management. Thanks and take care Dr Shailja P Wahal