Ketoconazole is used to treat skin infections such as athlete's foot, jock itch, ringworm, and certain kinds of dandruff. This medication is also used to treat a skin condition known as pityriasis (tinea versicolor), a fungal infection that causes a lightening or darkening of the skin of the neck, chest, arms, or legs. Ketoconazole is an azole antifungal that works by preventing the growth of fungus.
- Use this medication on the skin only. Clean and thoroughly dry the area to be treated.
- Apply this medication to the affected skin, usually once or twice a day or as directed by your doctor.
- Dosage and length of treatment depends on the type of infection being treated. Do not apply this more often than prescribed. Your condition will not clear faster, but side effects may be increased.