Ketoconazole is an antifungal medication used to treat various fungal infections, including those affecting the skin and nails. It works by stopping the growth of fungi, making it effective against conditions like athlete's foot and ringworm. Ketoconazole can be found in both topical forms, like creams and shampoos, and oral tablets. In addition to treating infections, ketoconazole is sometimes used to manage Cushing's syndrome, a condition caused by excess cortisol. However, it’s important to use this medication under a doctor's guidance, as it can have side effects and interact with other medications. Always consult a healthcare professional before starting treatment.