The<unk>  is a medical<unk>  observed as a visible<unk> ning of skin on the<unk>  when the subject elevates the<unk> s above the shoulder girdle with fingers pointing to the ceiling and palms facing forward. It results from this change in position causing a compression of the subclavian artery and temporary loss of circulation, as often occurs in patients with thoracic outlet syndrome, a complex syndrome involving the compression of various nerves and blood vessels between the axilla (armpit) and the base of the neck.
White hand sign
Thumbprint sign
Mickey Mouse sign
Crescent sign
Markle sign
Amsler sign
Westermark sign
John Thomas sign