A 6-year-old male presents with rash, joint pain, and abdominal pain. VS are normal, and exam reveals palpable purpura in the lower extremities. His abdomen is not tender to palpation, and his testicles are normal. Platelets and coagulation panel are normal. What is the diagnosis?

A 20-year-old male college student arrives by ambulance restrained in a stretcher. Members of his fraternity called the police saying he became violent and agitated after "burning incense". He is hypertensive and tachycardic with a normal blood glucose. What is the diagnosis, and what are your next steps?

A 50-year-old male with uncontrolled diabetes presents with pain and swelling in his right foot.  He does not recall any injury to the foot or leg.  On exam, crepitus is noted on the foot and ankle. What is the diagnosis, and what are your next steps?

A 26-year-old male groundskeeper is sharpening a rusty lawnmower blade without eye protection when he feels a sudden pain and loss of vision in his right eye. What is the diagnosis, and what are your next steps?

A 62-year-old male presents holding a bloody wash cloth pinched over his nose spitting blood into a coffee mug.  His wife walks in behind him with a grocery bag full of medications.  Among them you recognize a common blood thinner. What is the diagnosis, and what are your next steps?

A 52-year-old male with a history of severe liver disease, cirrhosis, and hepatitis C presents with altered mental status. His vital signs are normal, and he displays asterixis on exam, with otherwise normal neurologic exam. His ECG, head CT, and labs are normal. What should you consider, and what are your next steps?

A patient walks into your ED with a shirt covered in blood. He’s actively vomiting. Your triage nurses quickly get him into a wheelchair and roll him back to one of your critical care booths. You have little time to act to stabilize this critically ill patient. What are your next steps?

An 18-year-old male has been found unresponsive in a house fire with severe burns. VS in the field include T 37.5C, BP 144/77, HR 110, RR 15, Pulse Ox 98% on RA. You have minutes to prepare your team to care for this patient. What’s your next step in evaluation and treatment?