Motor Disturbance

Definition: A motor disturbance refers to the impairment or abnormality in the control, coordination, or execution of movements resulting from dysfunction in the nervous system.

Types of Motor Disturbances

1. Hypokinesia: Hypokinesia is characterized by reduced voluntary muscle movements, leading to decreased speed, range, or intensity of movements. It is commonly observed in conditions such as Parkinson’s disease.

2. Hyperkinesia: Hyperkinesia refers to excessive, abnormal, and involuntary movements. This can manifest as tremors, tics, chorea, dystonia, or athetosis. Examples of hyperkinetic disorders include Huntington’s disease or Tourette syndrome.

3. Ataxia: Ataxia is a motor disturbance characterized by the lack of coordination and balance. It leads to unsteady and uncoordinated movements, affecting fine motor skills and posture. Conditions like cerebellar disorders or multiple sclerosis can cause ataxia.

4. Spasticity: Spasticity is the increased muscle tone that causes stiffness and spasms. It can result in difficulties with movement and muscle control. Conditions such as cerebral palsy or spinal cord injuries often lead to spasticity.

5. Apraxia: Apraxia is a motor disorder characterized by the inability to perform skilled or purposeful movements, despite having the physical ability to do so. It commonly affects activities like dressing, using tools, or speaking. Apraxia can be caused by strokes or brain damage.