True about Henoch Schonlein purpura is -
Answer- C. IgA deposition in mesangiumHenoch - Schonlein purpura is vasculitis of small vessels (capillaries, venule or aerioles) and characterized by deposition of IgA in the wall of involved vessels.H.S. purpgra is characterized by tetrad of purpura ahritis glomerulonephritis, and abdominal pain.Diagnosis is confirmed by presence of palpable purpura with normal platelet count along with one or more of the following:abdominal pain, ahralgia/ahritis and mesangial deposition of IgA.
Medium vessels vasculitis
Renal symptoms sta late in the disaese
IgA deposition in mesangium
Low Platelet count