轮替动作障碍

Also known as Dysdiadochokinesis

Dysdiadochokinesia (DDK) is the medical term for an impaired ability to perform rapid, alternating movements (i.e., diadochokinesia). Complete inability is called adiadochokinesia. The term is from Greek δυς dys "bad", διάδοχος diadochos "working in turn", κίνησις kinesis "movement". The term was first described by neurologist Joseph Francois Félix Babinski in 1902. Impaired pronation/supination of the upper extremities, hand/finger tapping, and heel-to-shin test are some clinical ways to test for dysdiadochokinesia. Causes can either be from cerebellar or extrapyramidal origin. Management inc