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The main sign of the Huntington's disease is chorea, which consists in an involuntary movement disorder manifested by non-repetitive jerky face, limbs and trunk. Chorea appears along the first 10 years of age in 90 % of individuals affected. Oculomotor disturbances appear early and difficulties in initiating ocular saccades and problems in gaze fixation occur in 75 % of symptomatic individuals. 

Motor symptoms worsen when the disease progresses and bradykinesia, dystonia, lack of coordination and ridigity might occur. Alterations in gait and motor speed might occur. Dysarthria and hyperreflexia occur in early stages and dysphagia in later ones.

Motor symptoms

 

The main motor symptoms are:

 

  • Abnormal facial movements

  • Involuntary limbs'movements and other parts

  • Difficulties in swallowing (improper movement of mouth muscles)

  • Loss of co-ordination

  • Altered gait and motor speed

  • Ridigity

  • Dysarthria

  • Hyperreflexia

Juvenil-onset Huntington's disease patient. Chorea, ridigity, cognitive decline and neuropsyachiatric symptoms are shown.

Huntington's disease patient. He occurs with abnormal facial and limbs movements.

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