A 34-year-old African-American woman presents to the emergen…
A 34-year-old African-American woman presents to the emergency department with sudden-onset dark urine and pallor. She also complains of back pain and fatigue. She has a history of celiac disease. Due to inconsistent adherence to a gluten-free diet, the patient has recently developed dermatitis herpetiformis. She was started on dapsone 2 days ago. Labs are drawn, as shown below:Leukocyte count: 11,000Hemoglobin: 8.0 g/dLPlatelets: 200,000 PT/PTT: normalSerum:Aspartate aminotransferase (AST, GOT): 15 U/LAlanine aminotransferase (ALT, GPT): 12 U/LTotal bilirubin: 3.8 mg/dLDirect bilirubin: 0.2 mg/dLHaptoglobin: 36 g/dL (normal range: 50-200 g/dL)Lactate dehydrogenase (LDH): 125 U/LGlucose-6-phosphate dehydrogenase (G6PD): 8.5 U/g (normal range: 5.5 to 20.5 U/g)A peripheral smear shows red blood cells with semicircular portions removed from the cells’ periphery. Inclusion bodies are seen with methylene blue staining. Which of the following is the most likely diagnosis?