<unk> 's sign,<unk><unk> , or Thompson's sign is a clinical sign in which pink or red<unk>  formed of confluent petechiae are found in skin creases, particularly the crease in the antecubital fossa, the soft depression on the inside of the arm; the folding crease divides this fossa where the forearm meets the (upper) arm (the biceps, triceps, humerus section of the upper extremity); the inside of the elbow (the inside flexor depression (fossa) of the elbow. It occurs in patients with scarlet fever prior to the appearance of the rash and persists as pigmented<unk>  after desquamation. The sign is named after the Romanian physician Constantin Chessec<unk>  (1883–1926).
Pastia's lines
Beau's lines
Langer's lines
Blaschko's lines
Gilula's lines
Kerley lines
Dennie–Morgan fold
Dandy's point