Dermatophytosis, or fungal infections like ringworm, in darker-skinned individuals can appear as round, scaly patches with raised borders, which may be harder to spot due to pigmentation differences. These infections, caused by fungi such as Trichophyton, Microsporum, or Epidermophyton, can affect the skin, hair, and nails, leading to itching and hair loss in more severe cases. Treatment typically involves antifungal creams, oral antifungal medications like terbinafine, and maintaining clean, dry skin to prevent recurrence.