Dyskinesia

The impairment of the power of voluntary movement, resulting in fragmentary or incomplete movements.

Any disturbance of movement; may be induced by medication.

Poor coordination, clumsy, inappropriate movements in a person without detectable cerebral palsy.

The inability to control voluntary movements.

Dyskinesia is a collection of movement disorders involving impairment of central nervous system motor control. It is thought to be due to damage or abnormal development of the basal ganglia, the deep subcortical nuclei in the cerebral cortex. Involuntary movement, irregular motions, or lack of coordinated voluntary movement characterizes dyskinesia. Dyskinetic movement disorders include dystonia, tremor, chorea, tics, and myoclonus. Each movement disorder is uniquely characterized. For example, dystonia is characterized by involuntary, sustained posturing. Small oscillating movements at rest or with effort characterize tremor. Random, excessive, irregularly timed movements characterize chorea. Tics are brief, repetitive, involuntary movements. Involuntary movements that are rapid, shock-like, and arrhythmic (unpatterned) characterize myoclonus.

Abnormal or difficult voluntary movement of muscles, joints or other body parts. May occur as a result of certain medications or illnesses.

An abnormal, involuntary movement such as twitching, nodding, or jerking. Dyskinesias range from mild to severe and from slow to rapid. These movements may develop as a side effect of a drug, or they may be caused by a brain disorder.

A group of involuntary movements that appear to be a fragmentation of the normal smoothly controlled limb and facial movements. They include chorea, dystonia, and those involuntary movements occurring as side-effects to the use of L-dopa and the phenothiazines.

Abnormal movements of the muscles resulting from disorder of the brain. Movements are uncoordinated and involuntary and occur in facial as well as limb muscles. They include athetosis (writhing movements), chorea (jerking movements predominate), choreoathetosis (a combined type), myoclonus (spasms), tics and tremors.

A defect in the ability to perform voluntary movement.

Atypical muscular movements manifest as involuntary twitches, jerks, or writhing motions that cannot be controlled, potentially interfering with voluntary movement regulation. This condition may encompass the entire body or be confined to specific muscle groups.

Dyskinesia manifests in various forms, including chorea (characterized by jerking movements), athetosis (involving writhing movements), choreoathetosis (a combined presentation), myoclonus (resulting in muscle spasms), tics (displaying repetitive fidgets), and tremors.

Dyskinesia can arise due to birth-related brain damage or as a potential side effect of specific medications (known as tardive dyskinesia). In many cases, the symptoms may resolve once the medication is discontinued. However, treating dyskinesia is generally challenging otherwise.