Liver involvement in the sulfone syndrome

Area of Science:

• Pharmacology
• Hepatology
• Toxicology

Background:

• Dapsone is a medication used to treat various conditions, including leprosy and certain dermatological disorders.
• Hypersensitivity reactions to dapsone can occur, manifesting as a spectrum of symptoms known as sulfone syndrome.
• Hepatitis is a potential, though uncommon, complication of sulfone syndrome.

Observation:

• A patient treated with dapsone presented with fever, malaise, and hepatitis, consistent with sulfone syndrome.
• The patient's symptoms and laboratory abnormalities resolved rapidly upon dapsone discontinuation and initiation of prednisone therapy.
• Review of FDA reports suggests sulfone syndrome is relatively uncommon, but may present with incomplete features.

Findings:

• Hepatic involvement in sulfone syndrome can present as hepatocellular or cholestatic liver injury.
• Early recognition and management are crucial for favorable outcomes in dapsone-induced hypersensitivity.
• The exact incidence and mechanisms of sulfone-induced liver disease require further investigation.

Implications:

• Physicians should be aware of the potential for dapsone-induced hepatitis as part of the sulfone syndrome.
• Incomplete or atypical presentations of sulfone syndrome necessitate clinical vigilance.
• Further research is needed to elucidate the pathogenesis and precise incidence of dapsone-related liver injury.