A 24 year old male presents with abdominal pain, rashes, palpable purpura and, ahritis. The most probable diagnosis is:
Henoch Schonlein Purpura (HSP)
Sweet syndrome
Meningococcemia
Hemochromatosis
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