The most common leukocytoclastic vasculitis affecting children is –

Leucocytoclastic vasculitis- It is a cutaneous acute vasculitis characterized clinically by palpable purpura especially of the legs and histologically by the presence of leucocytoclasts (Leucocytoclasts are nuclear debris of neutrophils) Causes of leucocytoclastic vasculitis: - Drug-induced vasculitis    Henoch schonlein purpura     Systemic lupus erythematosis               Rheumatoid arthritis     Sjogren's syndrome     Essential mixed cryoglobulinemia               SABE     EBV infection                HIV infection                                   Chronic active hepatitis       Ulcerative colitis     Retro peritoneal fibrosis              Primary biliary cirrhosis