A Wood's lamp fluorescence test may be performed to confirm the diagnosis. This test is commonly performed because it is easy to perform and results are immediately available. A skin lesion biopsy with microscopic examination or culture to look for dermatophytes may be perfromed. This test may not be necessary in all cases. Treatment Care should be taken to not overtreat ringworm , because it can cause side effects.
Ringworm usually responds to self-care.
Keep the skin clean and dry. Severe or chronic infection may require further treatment by the health care provider. Oral antifungal medications may be given. Stronger, prescription topical antifungal medications, such as ketoconazole or sulconazole may be needed. Antibiotics may be needed to treat secondary bacterial infections.