A 24 year old male presents with dyspnea and pleuritic chest pain.  He was recently hospitalized about 8 days ago for a stab wound.  He required a chest tube for a hemo-pneumothorax.  He had been improving for the last five days at home until today when his symptoms suddenly worsened.
On exam his vital signs and [...]

43: Headache
A 31 year old male presents to the ED with a headache.  He states he rarely gets headaches, but has been having on and off headaches all week.  Tonight, after sexual intercourse, he developed a sudden headache, which is still present.  He denies fever, but has vomited twice.
On exam his vital signs are normal.  [...]