A fungal infection that persists for several months requires a thorough medical evaluation by a dermatologist to determine the underlying cause and the specific type of fungus involved. Treatment may include both topical and oral antifungal medications, depending on the severity of the infection. It is important to maintain good hygiene, keep the affected area clean and dry, and avoid self-medication. Screening for underlying conditions such as diabetes or immune suppression is also recommended to prevent recurrence.