A 24-year-old woman comes to the physician for a 1-week history of blistering skin lesions on her arms, trunk, and legs. A biopsy specimen of the skin shows sub-epidermal blisters. One year ago she was treated with trimethoprim/sulfamethoxazole for a urinary tract infection. Vitals are normal. Which of the following is the most likely explanation for this patient’s findings?
Bullous pemphigoid
Goodpasture syndrome
Granulomatosis with polyangiitis
Pemphigus vulgaris
Stevens-Johnson syndrome
