🧠 Nervous System🟢 BasicMovement Disorders

Movement Disorders

Neurological conditions that produce too much or too little movement, from tremor and jerks to slowness and stiffness.

Key points

Movement disorders arise mainly from the basal ganglia, the deep brain circuits that smooth and control movement.
They are broadly divided into disorders with too little movement, such as parkinsonism, and those with too much movement, the hyperkinetic disorders.
Parkinsonism features slowness, stiffness, a resting tremor and a shuffling walk; it comes from too little dopamine, whether from Parkinson disease or other causes.
Hyperkinetic disorders include tremor, the dance-like movements of chorea, sudden jerks (myoclonus) and sustained twisting (dystonia).
Tics and the writhing of Huntington's disease are other examples, each pointing to particular parts of the movement system.

Memory trick

Movement disorders (basal ganglia): too little (parkinsonism = slowness, stiffness, resting tremor, shuffling, low dopamine) versus too much (chorea, myoclonus, dystonia, tics, tremor); Huntington's is a hyperkinetic example.

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🧠 Nervous System🟢 BasicMovement Disorders

Movement Disorders

Neurological conditions that produce too much or too little movement, from tremor and jerks to slowness and stiffness.

Key points

Movement disorders arise mainly from the basal ganglia, the deep brain circuits that smooth and control movement.
They are broadly divided into disorders with too little movement, such as parkinsonism, and those with too much movement, the hyperkinetic disorders.
Parkinsonism features slowness, stiffness, a resting tremor and a shuffling walk; it comes from too little dopamine, whether from Parkinson disease or other causes.
Hyperkinetic disorders include tremor, the dance-like movements of chorea, sudden jerks (myoclonus) and sustained twisting (dystonia).
Tics and the writhing of Huntington's disease are other examples, each pointing to particular parts of the movement system.

Memory trick

All of General Medicine More Nervous System