It is common for fungal infections to leave dark spots (post-inflammatory hyperpigmentation) even after the infection has cleared. Since your previous treatments didn't fully resolve the itch, you may be dealing with a resistant fungal strain. For the active infection, a dermatologist might consider alternative antifungals like oral itraconazole or topical luliconazole. Please avoid combination creams containing steroids, as they can worsen fungal infections. For the dark spots, these will fade naturally over time, but gentle creams containing kojic acid, azelaic acid, or niacinamide can help speed up the process. Consult a dermatologist for a proper physical evaluation and a tailored prescription.