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Non-leprosy related dapsone hypersensitivity syndrome: A case report and literature review
Hang-Qi Zhu1, Si-Hua Jiang, Guo-Lin Song
1The Second Hospital Affiliated to Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, China.
Rationale:
Dapsone is used for treating infectious and immunological disorders, but it may cause dapsone hypersensitivity syndrome (DHS), a serious concern for medical staff. However, in non-leprotic patients, the manifestations of DHS can be atypical and various, leading to diagnostic challenges and potential delays in treatment initiation, which requires attention.
Patient Concerns:
A 17-year-old Chinese male developed DHS after 3-week dapsone treatment for vasculitis, showing the risk of dapsone use in young patients.
Diagnosis:
DHS symptoms include fever, rash, and lymphadenopathy, which can be life-threatening. Diagnosis for this patient was based on symptom recognition, medical history review, physical examination, and the link between dapsone intake and symptom onset.
Interventions:
Once diagnosed, dapsone was withdrawn immediately. Corticosteroids were given to reduce inflammation, and antipyretics and anti-histamines were used for symptom relief.
Outcomes:
After treatment, the patient improved. Fever subsided quickly, the rash resolved in a week, and lymphadenopathy shrank. Follow-up showed full recovery with no symptom recurrence.
Lessons:
This report details a case and reviews published cases of DHS. Summarizing their features aims to improve diagnostic accuracy and management strategies, thus helping healthcare providers handle similar cases better.

