A 17-year-old girl presents to urgent care complaining of easy bruising, especially on her legs. She couldn’t recall having any injuries, even minor bumps, that might have caused the red and purple ecchymoses that had appeared. She insisted no one else had caused her harm. She also complained of headache and nausea. A high school student, she was about to complete her final exams and was concerned she would have bruises on her legs during graduation.
View the image and consider what your diagnosis and next steps would be. Resolution of the case is described on the next page.