Review Question - QID 213194

A 23-year-old woman presents to the emergency department with severe abdominal pain. The pain started suddenly several hours ago and has steadily worsened. The patient has a past medical history of anxiety and depression. Her current medications include sertraline, sodium docusate, a multivitamin, and fish oil. The patient is currently sexually active with her boyfriend and uses the "pull-out" method for contraception. A pelvic ultrasound in the emergency room reveals an ectopic pregnancy. The patient is scheduled for surgery and is promptly treated. She is recovering on the surgical floor. The procedure was complicated by a large amount of blood loss. The patient is recovering on IV fluids when her family comes to visit. When her parents find out the diagnosis, yelling ensues and they leave angrily. The patient is scheduled to go home today. Prior to discharge, the patient reports she is unable to use her left hand. Upon examination, she is teary-eyed and she claims that she has “the worst family in the world,” and she does not want to go home. Physical exam reveals no skin or bony abnormalities of the left arm. Strength is 0/5 in the left upper extremity. She does not recoil her left arm to pain. A MRI is obtained and is unremarkable. The rest of the patient’s neurological exam is within normal limits. Which of the following is the most likely diagnosis?