Clinical Neurology Glossary

A neurological condition characterized by lack of will or motivation to act, distinct from depression or physical inabil...

Language disorder characterized by the loss of ability to construct grammatically correct sentences, typically affecting...

A movement disorder characterized by a subjective feeling of inner restlessness and an inability to sit still.

Complete absence or loss of voluntary movement, distinct from bradykinesia (slowness) or hypokinesia (reduced movement).

A neurological condition characterized by profound apathy and lack of spontaneous movement or speech despite preserved c...

Neurological disorder where one hand performs purposeful movements without conscious control or intention by the patient...

Pain response to normally non-painful stimuli, often indicating dysfunction in pain processing pathways.

Localized dilation or ballooning of a blood vessel wall, most critically concerning when occurring in cerebral arteries.

A radiographic study using contrast material to visualize blood vessels in the brain and neck for diagnosing vascular ab...

Unequal pupil sizes, which may indicate neurological pathology or be a benign anatomical variant.

A neurological condition in which patients are unaware of or deny their own neurological deficits or disabilities.

Language disorder caused by brain damage, affecting speech production or comprehension.

Motor speech disorder affecting the ability to plan and coordinate the precise movements needed for speech production.

Inability to identify objects by touch alone without visual input, indicating parietal lobe dysfunction.

A tremor consisting of involuntary jerking movements caused by brief lapses in muscle tone, often described as a "flappi...

A primary brain tumor arising from astrocytes, ranging from low-grade to high-grade malignant forms including glioblasto...

Lack of muscle coordination affecting movement, balance, and speech.

Slow, writhing, involuntary movements typically affecting the distal extremities, often seen in cerebral palsy.

A subjective sensory, motor, or psychic phenomenon that precedes or accompanies a seizure, particularly in focal epileps...

An abnormal plantar reflex indicating upper motor neuron dysfunction, characterized by upward movement of the great toe.

A hyperkinetic movement disorder characterized by violent, flinging movements of the limbs.

Slowness of voluntary movement, characteristic of Parkinson's disease.

Slowness of thought processes and mental responses, often seen in subcortical dementias.

A benign vascular malformation consisting of abnormal blood vessels with a characteristic "popcorn" appearance on MRI.