idiopathic brachial plexitis;

Etiology

• generally a triggering event such as infection or surgery

Clinical manifestations

• subacute severe shoulder pain
• muscle weakness, muscle atrophy with resolution of shoulder pain
• winged scapula
• symptoms peak in 2 weeks

Management

• presumably supportive
• spontaneous recovery may take up to 2 years

More general terms

• brachial plexus neuropathy (Parsonage-Turner syndrome)

Additional terms

• neuralgic amyotrophy