This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
A 24 year old male presents with abdominal pain, rashes, palpable purpura and, ahritis. The most probable diagnosis is: 
Select and explain. 
A. Henoch Schonlein Purpura (HSP), B. Sweet syndrome, C. Meningococcemia, D. Hemochromatosis
A: Henoch Schonlein Purpura (HSP)
Answer: A: Henoch Schonlein Purpura (HSP) 
Explanation: The above mentioned clinical features are the classic presentation of HSP. So Henoch Schonlein Purpura is the single best answer of choice. Ref: Harrison's Principles of Internal Medicine, 16th Edition, Page 2010