Dapsone is an antibiotic medication that is primarily used to treat leprosy and skin conditions such as acne and dermatitis herpetiformis. There are many synonyms for dapsone, including diaphenylsulfone, DDS, and 4,4'-diaminodiphenylsulfone. These synonyms refer to the same active ingredient, which works by stopping the growth of bacteria that cause skin infections. Dapsone is available in different forms, including tablets, creams, and gels, and is prescribed by a doctor based on the patient's specific condition. While dapsone is generally regarded as safe and effective, it may cause side effects, such as headaches, nausea, and skin reactions, which should be promptly reported to a healthcare provider.