Parsonage-Turner Syndrome (Neuralgic Amyotrophy)

Sudden Shoulder Nerve Attack

Acute severe shoulder/arm pain followed by rapid weakness within 2 weeks. Affects brachial plexus, often post-viral or post-surgical. Classic pattern: serratus anterior and/or supraspinatus/infraspinatus. MRI shows denervation oedema. Recovery: 80% regain useful function by 2-3 years.

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