Review Question - QID 218841

A 44-year-old female well known to your clinic is being seen for follow-up after undergoing nonoperative treatment of a wrist sprain. She notes that over the past 6 weeks, her pain has become increasingly more severe and that even attempting to put gloves on causes extreme pain. She also notes that her affected extremity seems to sweat more than the unaffected side, and she reports difficulty opening jars due to weakness in her grip strength. The patient is otherwise healthy, and noted that a sympathetic block administered by her PM&R physician provided marked, albeit temporary, relief. Which of the following diagnoses best encapsulates her constellation of symptoms?