Also referred to as tinea corporis, ringworm infection develops on the top layer of skin. Characterized by an itchy, red circular rash that has healthy-looking skin in the middle, ringworm originates from a fungus, having no connection to worms.
The fungi are attracted to warm, moist environments, which is why the most common forms of ringworm include:
Usually, mild cases of ringworm respond well to over-the-counter antifungal creams and ointments like clotrimazole, miconazole, terbinafine and tolnaftate. After cleaning and drying the area, apply a thin layer of the medicine one to two times as directed. If the rash does not clear up within four weeks, your doctor may need to prescribe a stronger topical agent or oral antifungal medication.