A 7-year-old boy presents with palpable purpura on the buttocks and lower extremities, colicky abdominal pain, and bilateral knee arthralgia one week after upper respiratory infection. Vital signs: BP 118/76 mmHg, HR 88/min, RR 20/min, Temp 37.2°C, SpO2 98%. Urinalysis reveals microscopic hematuria with RBC casts. Abdominal examination shows no hepatosplenomegaly. He denies recent drug exposure. Which diagnosis best explains this clinical presentation?
- A)Kawasaki disease
- B)Buerger disease
- C)Takayasu arteritis
- D)Polyarteritis nodosa
- E)IgA vasculitisGABARITO
Explicação
IgA vasculitis, formerly Henoch Schonlein purpura, is a small vessel immune complex vasculitis seen in children after infections. It classically causes palpable purpura, arthralgias, abdominal pain, and renal involvement with hematuria. The deposited immunoglo... Ver explicação completa e trilha adaptativa →