History of Present Illness: A man in his early 60’s presents to the ER for 10 days of R wrist pain. He was seen the day it started and put on antibiotics and ibuprofen which helped some but it still hurts a lot and looks the same. X-rays of the hand/wrist/forearm were read out as normal
Vital Signs & Physical Exam: Vital signs are normal
Physical exam is otherwise normal except for some R wrist swelling/redness/tenderness
Initial Diagnostic Testing:
- CBC: normal except but CRP elevated at 1.6
- Chem-7: normal
- Imaging:
What is the most likely diagnosis?
- A) Cellulitis with resistance
- B) Septic arthritis
- C) Pseudogout
- D) Tenosynovitis
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ANSWER:
- A) Cellulitis – this was the erroneous diagnosis of the first provider to see this patient
- B) Septic arthritis – rare in wrist and without risk factors
- C) Pseudogout – CORRECT – PG is rare but one of the most common cause of atraumatic wrist pain, swelling and redness in older patients
- D) Tenosynovitis
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CASE CONCLUSION: XR knee showed CPPDD
CASE LESSONS: Pseudo-gout is a rare condition that is not infrequently misdiagnosed initially. It is one of the most common causes of atraumatic wrist pain and swelling in older individuals.