The Purport of Steroid Treatment in the Weakness Phase of Parsonage-Turner Syndrome

This article presents six cases of Parsonage-Turner syndrome with corticosteroid therapy in the muscle weakness phase. Three cases did not receive injected steroids after the onset of muscle weakness, and were classified as Group 1. The other three cases received injected steroid from just after muscle weakness onset, and were classified as Group 2. This article has a small study group of six cases, but is the first case study about the efficacy of steroids in the muscle weakness phase, showing a better treatment result when steroids were injected during the muscle weakness period. We report these findings, together with a review of the literature.