Last updated on: May 18th, 2023

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You’re looking at an interactive case study from Prognosis: Your Diagnosis (one of four distinct learning formats available in Clinical Odyssey). Try it out, and have fun improving your clinical skills.



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A 54-year-old woman presents with a 2-month-history of multiple erythematous lesions over both lower extremities. They first appeared over the lower leg, with slow upward extension up to the knees. The lesions are palpable, but not pruritic, painful, or tender. She also experienced on and off generalized arthralgia and myalgia for the same time period. There was no history of swollen joints. Neither were there constitutional symptoms nor significant weight loss. Her medical history is unremarkable except for mild depression for one year, after losing her job as an administrative assistant. This was treated as an outpatient, in the psychiatry clinic. Currently, she is not taking any medications and is not known to have any allergies. She does not smoke and only drinks socially. She used IV heroin and cocaine for almost half-a-decade, in her 20s, but managed to stop after a program of rehabilitation, along with strong family support. She has remained drug-free since then.

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