This test is used to check for cerebellar disease.

Performing the Test

  1. Upper limbs: ask patient to pronate and supinate their hand against their thigh as quickly as they can
  2. Lower limbs: ask patient to tap your hand as quickly as possible with the ball of each foot
  3. Dysdiadochokinesis: lack of coordination during these movementsrapid


  1. Bickley, Lynn S. Bates' Guide to Physical Examination and History Taking. 8th ed. Philadelphia, PA: Lippincott Williams & Wilkins: 2003.