ketoconazole is used to treat fungal infections of the skin. It works by killing the fungus that causes infections such as athlete’s foot, thrush and ringworm.
You should use this medicine for as long as it is prescribed, even if your symptoms disappear, otherwise they may come back. Depending on the type of infection you are treating, this may be several weeks. Even after your skin is completely cured, you may have to apply the cream occasionally to prevent the symptoms from returning.