If your roommate has a fungal infection in the groin area that is not improving despite using multiple creams, it is likely a resistant or long-standing infection, often made worse by improper treatment or use of steroid-mixed creams. In such cases, simple creams alone may not be enough. He should stop any steroid-containing creams and consult a doctor or dermatologist for proper evaluation. Treatment usually involves a full course of oral antifungal medicines such as terbinafine or itraconazole, along with a suitable antifungal cream applied regularly for a few weeks. It is also important to keep the area clean and dry, wear loose cotton underwear, avoid sharing towels or clothing, and continue treatment for the full duration, even after symptoms improve, as incomplete treatment can lead to recurrence. Early and correct treatment will help achieve a complete and lasting cure.