Assertion: schönlein purpura | /r/CapableOf | present as a triad of symptoms
Facets:
Source sentences:
text: It has an incidence of 14 cases per 100,000 people and occurs most frequently in the spring and fall.2 Henoch-Schönlein purpura may present as a triad of symptoms: a palpable purpuric rash on the lower extremities, abdominal pain or renal involvement, and arthritis.