Abstract
A 43-year-old incarcerated man with AIDS was hospitalized for 30 pounds weight loss
and diffuse pruritic rash. Three months prior, he was started on dapsone for Pneumocystis
jiroveci pneumonia prevention. Biochemical evaluation was remarkable for eosinophilia,
thrombocytopenia, acute renal insufficiency, transaminitis, thyrotoxicosis, and significant
hyperglycemia (450 mg/dl; nl, 65–99). His hemoglobin A1c level was 5.9% (nl, 4.1–5.6).
Thyroid-stimulating immunoglobulin, glutamic acid decarboxylase, and islet cell autoantibodies
were within the normal range. He was found to have acute interstitial nephritis based
on renal biopsy. He was diagnosed with hypersensitivity reaction due to dapsone. The
patient was managed with a tapering dose of corticosteroid, beta-blocker, and multiple
daily injections of insulin. The symptoms and biochemical disturbances including thyrotoxicosis
resolved within a few weeks. Insulin requirements decreased but diabetes did not resolve
with hemoglobin A1c of 6.1% a year after hospitalization. To our knowledge, this is
the first case of hypersensitivity reaction due to dapsone causing simultaneous fulminant
type 1 diabetes and thyroiditis.
Keywords
Fulminant type 1 diabetes - hypersensitivity syndrome - thyroiditis - thyrotoxicosis