<unk>  is a medical sign that denotes an eyelid phenomenon in hyperthyroidism and Basedow's disease. In fixation on a fast upwards movement there occurs a convulsive retraction of the eyelid.
Kocher's sign
Adson's sign
Bing's sign
Pemberton's sign
Hamman's sign
Louvel's sign
Dahl's sign
Dance's sign