Case Report on Botulinum Toxin Treatment for Complex Regional Pain Syndrome in a Digit Reconstruction.

To evaluate subcutaneous Botulinum toxin type A (BTX-A) efficacy in alleviating severe allodynia in complex regional pain syndrome (CRPS) type II post-digit reconstruction. After surgical debridement and flap reconstruction for post-traumatic necrosis, a CRPS type II patient received subcutaneous BTX-A. Assessments tracked symptom changes and daily life improvements. There are various CRPS management modalities, including rehabilitation and pharmacology. The limited efficacy of conventional non-steroidal antiinflammatory drugs contrasts with promising subcutaneous BTX-A, offering rapid pain relief. Our case underscores the efficacy of subcutaneous BTX-A in CRPS type II, prompting further research and safe outpatient protocol development.