“…Dermatologic signs are an early and frequently occurring clue to the diagnosis of HSP in almost all cases. Few cases of HSP have been described in children less than 2 years of age, but in these children the gastrointestinal complications tend to be minimal (5,6). The classic symptoms, most frequently in boys 2 to 8 years of age, include a purpuric rash over the lower extremities and buttocks, associated with acute onset of colicky abdominal pain, vomiting, arthritis, and (infrequently) seizures and coma (7).…”