I would like you to consult a paediatrician to rule out possibilities of henoch schonlein purpura
. It is a self limiting disorder with purpuric spots over body, abdominal and joint pains
, blood in stools, hives, kidney and lung involvement might be there. The disease is a self resolving one, however if there are persistent symptoms a course of steroids
might be required. Hope that answers your query. Take care.