<prompt> A four-year-old child presents with mild fever, malaise, purpura, arthritis, abdominal pain and microscopic hematuria. What would be the most likely diagnosisThrombastheniaIdiopathic thrombocytopenicSystemic Lupus ErythematosusHenoch-Schonlein purpura  <response>: Henoch-Schönlein purpura affects the small blood vessels of the skin, joints, intestines and kidneys. Its most common before the age of seven but can affect anyone.Symptoms include reddish-purple spots on the lower extremities, swollen and sore joints, abdominal pain or bloody urine.The condition is often treated with steroids 