Incoordination

Finger - nose testing Ask patient to touch his nose with finger (eyes open).

Look for jerky movements -DYSMETRIA or an INTENTION TREMOR (tremor only occurring on voluntary movement).

Ask patient to alternately touch his own nose then the examiner's finger as fast as he can. This may exaggerate the intention tremor and may demonstrate DYSDIADOCHOKINESIA - an inability to perform rapidly alternating movements.

This may also be shown by asking the patient to rapidly supinate and pronate the forearms or to perform rapid and repeated tapping movements.

Arm bounce

Rebound phenomenon

Arm bounce

Downward pressure and sudden release of the patient's outstretched arm causes excessive swinging.

Rebound phenomenon

Ask the patient to flex elbow against resistance. Sudden release may cause the hand to strike the face due to delay in triceps contraction.

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