Acute Inflammatory Demyelinating Polyradiculoneuropathy—usually shortened to AIDP—is an autoimmune attack on the insulating myelin sheath that normally helps peripheral nerves carry fast, clear ...
Guillain–Barré syndrome is an uncommon but serious autoimmune nerve disorder in which the body’s own immune system suddenly turns against the peripheral nerves—the long “wiring” that carries commands ...
Gradenigo’s syndrome is the name doctors give to a very specific complication of a middle-ear infection. When bacteria in an episode of acute or chronic otitis media break through the tiny air cells ...
Gómez–López-Hernández syndrome (GLHS)—also called cerebello-trigeminal-dermal dysplasia—is an extremely rare neuro-cutaneous disorder first described in 1979. The hallmark “classic triad” combines ...
Gillespie syndrome (GS) is an ultra-rare genetic disorder that blends partial or “scalloped” aniridia, congenital or slowly progressive cerebellar ataxia, and mild-to-moderate intellectual ...
Gerstmann–Sträussler–Scheinker syndrome is a very rare, inherited brain disease belonging to the group of human prion disorders. In prion diseases, a perfectly normal body protein called prion ...
Left-right disorientation (sometimes called left-right confusion or discrimination difficulty) is a neuro-cognitive problem in which a person cannot reliably tell the difference between the left and ...
Finger agnosia is a loss of “finger sense.” A person can feel that a finger is being touched but can’t tell which finger it is, can’t name that finger, and often can’t move the requested finger on ...
Dysexecutive — sometimes called frontal — acalculia is a loss or severe disturbance of arithmetic ability that springs not from faulty number knowledge itself but from damage to the brain systems ...
Spatial acalculia is a specific kind of number-processing problem that appears when the brain’s “map-making” areas are injured or under-developed. People with this disorder can still recognise ...
Agraphic acalculia is an acquired problem in which a person, who once wrote numbers and solved sums without effort, suddenly cannot set figures down on paper correctly. It is part of the broader ...
Alexic acalculia is a secondary form of acalculia in which the main obstacle to doing arithmetic is an acquired reading problem (alexia). The person can still think about numbers and may solve simple ...
Aphasic acalculia is an **acquired problem with doing math that happens **because a person also has aphasia—an impairment of spoken or written language after brain injury. In simple terms, the brain ...
Frontal-executive anarithmetia (sometimes called dysexecutive or frontal acalculia) is a loss or severe reduction of a person’s everyday calculating skills that springs from damage to the brain’s ...
Anarithmetia—also called primary acalculia—is an acquired loss of the very idea of number and of the rules that let us add, subtract, multiply, or divide. People who were once good at everyday sums ...
Acalculia is an acquired loss of the ability to understand numbers or carry out even the simplest calculations after the brain has been injured by disease or trauma. People who once added, ...
Dementia-related agraphia is a progressive loss of the ability to write that arises because the brain changes that cause dementia also disrupt the complex network of regions that control handwriting, ...
Cerebellar agraphia is a loss or severe disturbance of handwriting that happens after damage or disease in the cerebellum—the small, densely folded “little brain” that sits at the back of the skull. ...
Thalamic agraphia is a specific kind of writing problem that appears after damage to the thalamus—the deep, egg-shaped relay station that sits in the centre of the brain. “Agraphia” means the partial ...
Apraxic Agraphia—also called motor-planning agraphia—is a writing disorder that happens when the brain can no longer organize the precise, sequential finger and hand movements needed to form letters, ...
