<unk> , also known as acute brachial neuropathy and neuralgic amyotrophy and abbreviated PTS, is a syndrome of unknown cause; although many specific risk factors have been identified (such as; post-operative, post-infectious, post-traumatic or post-vaccination), the cause is still unknown. The condition manifests as a rare set of symptoms most likely resulting from autoimmune inflammation of unknown cause of the brachial plexus.<unk>  occurs in about 1.6 out of 100,000 people every year.
Parsonage–Turner syndrome
Wilson–Turner syndrome
Klinefelter syndrome
Kallmann syndrome
Smith–Magenis syndrome
Kapur–Toriello syndrome
Malouf syndrome
XYY syndrome