<prompt> A four-year old child presents with mild fever, malaise, prupura, arithritis, abdominal pain and microscopic hematuria. What would be the most likely diagnosis -ThrombobastheniaIdiopathic thrombocytopenicSystemic lupus erythematosusHenoch-Schonlein purpura  <response>: Ans. is d i.e., Henoch-schonlein purpura 