At around 3 in the morning, you get called by the nurse with a question about a trauma patient. You're covering for that service and groggily, you flip through the list of patients. It is a middle age man status post motorcycle accident 2 days ago with bilateral femoral fractures. The nurse says the patient has dyspnea, tachypnea, and hypoxemia. He has also been confused and has a new rash on the head, neck, and anterior thorax. His platelets are fine.
Challenge: You stumble into the elevator and on your way up, you make the diagnosis. What is it?
Note: I tried really hard to find a picture of the rash, but simply could not get one. Sorry!