Learning module: Petechiae, purpura, and vasculitis

Goals and objectives

The purpose of this module is to help medical students develop a clinical approach to the initial evaluation and treatment of patients with petechiae and purpura.

After completing this module, the learner should be able to:

• Identify and describe the morphology of petechiae and purpura

• Outline an initial diagnostic approach to petechiae or purpura

• Recognize patterns of petechiae that are concerning for life-threatening conditions

• Recognize palpable purpura as the hallmark lesion of leukocytoclastic vasculitis

• Determine when a dermatology referral for petechiae or purpura is indicated