A child develops non-blanching Macules and papules on lower extremities, mild abdominal pain and skin biopsy showed IgA deposition. Most appropriate diagnosis is –
H.S. purpura is characterized by a tetrad of
Purpura,
Arthritis,
Glomerulonephritis and
Abdominal pain.

Diagnosis of H.S.purpura

Diagnosis is based on signs and symptoms.
Skin biopsy demonstrates leukocytoclastic vasculitis with IgA and C3 deposition.
Renal biopsy demonstrates IgA in mesangium.
Drug induced vasculitis
HSP
Wegener's granulomatosis
Kawasaki disease