This syndrome can begin with severe shoulder or arm pain followed by weakness and numbness. Those who suffer from<unk><unk>  experience acute, sudden-onset pain radiating from the shoulder to the upper arm. Affected muscles become weak and atrophied, and in advanced cases, paralyzed. Occasionally, there will be no pain and just paralysis, and sometimes just pain, not ending in paralysis. MRI may assist in diagnosis. Scapular winging is commonly seen.
Parsonage–Turner syndrome
Wilson–Turner syndrome
Klinefelter syndrome
Kallmann syndrome
Smith–Magenis syndrome
Kapur–Toriello syndrome
Malouf syndrome
XYY syndrome