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54-Year-Old Female with Asymptomatic Eruption on Legs

Can you diagnose this case?

David L. Kaplan, MD; Consultant. University of Missouri Kansas City, University of Kansas

Signs and Symptoms

A 54-year-old female presents with an asymptomatic eruption on her legs. She is otherwise healthy with no new medications or exposure history. She denies fever, cough, joint or muscle pain, headaches, or visual changes.

What is responsible for the asymptomatic eruption on her legs?

Choose one to reveal diagnosis and discussion

Cutaneous lupus erythematosus
Atopic dermatitis
Leukocytoclastic vasculitis
Polymorphous light eruption

Answer: Leukocytoclastic vasculitis

See the full case at Consultant360

This patient had confirmed leukocytoclastic vasculitis by skin biopsy. Subsequent evaluation and workup did not reveal any cause for her vasculitis. She was given a short 9-day prednisone taper with complete resolution. All lab work came back normal. She still has not relapsed. She was suspected to have leukocytoclastic vasculitis rather than the other potential diagnoses because of the presence of purpuric lesions.