<unk>  is characteristic of spinal cord injury between T9 and T10 levels. The sign has also been observed in amyotrophic lateral sclerosis, a disease causing progressive weakening of the muscles of multiple areas of the body, and in facioscapulohumeral muscular dystrophy (FSHD), a disease named after areas of the body it preferentially weakens (face, shoulder, and upper arm). FSHD tends to affect the lower rectus abdominis more than the upper.
Beevor's sign
Lockwood's sign
Litten's sign 
Litten's sign
Dance's sign
Adson's sign
Darier's sign
Hegar's sign