Lesch-Nyhan syndrome
/ˈleʃˈnaɪhən/noun
mass noun
- a rare hereditary disease which affects young boys, usually causing early death. It is marked by compulsive self-mutilation of the head and hands, together with mental handicap and involuntary muscular movements.莱-尼综合征（一种罕见男性幼儿遗传疾病, 常造成夭折, 症状为强迫性自残头和手, 伴有精神残疾和无法自制的肌肉动作）。
词源
1960s: named after Michael Lesch (born 1939) and William L. Nyhan (born 1926)， American physicians.