Bilateral parasagittal parieto-occipital polymicrogyria (BPPo-PMG) is a rare brain-development problem where the cortex forms too many tiny folds ...

Microcephaly, short stature, and polymicrogyria with seizures describes a child with three key features. First, the head size is small for age and sex ...

Diffuse polymicrogyria (PMG) is a brain-development problem in which the outer layer of the brain (the cortex) forms too many very small folds and the normal ...

Bilateral generalized polymicrogyria (BGP) is a brain development problem that starts before birth. In BGP, the outer layer of the brain (the cortex) forms too ...

Frontoparietal polymicrogyria (FPP) is a problem in how the brain’s outer layer (the cortex) formed before birth. “Polymicrogyria” means “many small folds.” In ...

Complex cortical dysplasia with other brain malformations 14A, often shortened to CDCBM14A, is a rare, inherited brain-development disorder. Before birth, the ...

Bilateral frontal polymicrogyria is a rare brain malformation that forms before birth. “Polymicrogyria” means “too many small folds” on the brain surface. In ...

Otitic hydrocephalus is a rare, serious complication of a middle-ear or mastoid infection in which pressure inside the skull (intracranial pressure) rises even ...

Nonne–Froin (Froin’s) syndrome happens when CSF can’t move freely because something is blocking the spinal canal or severely irritating the meninges (the ...

Noninfective serous meningitis means inflammation of the meninges (the thin coverings of the brain and spinal cord) with no bacteria growing on routine ...

Benign Familial Neonatal-Infantile Seizures 1 (BFNIS1) is a genetic epilepsy syndrome in which seizures start very early in life—anytime from the first days ...

Benign angiitis of the central nervous system means inflammation of blood vessels inside the brain and spinal cord. “Benign” is an old word and not accurate, ...

Familial cortical myoclonic tremor with epilepsy is a rare, inherited brain disorder. It causes tiny, shock-like muscle jerks that look like a shaky tremor, ...

Behrens-Baumann–Dust syndrome is a very rare, inherited condition that mainly affects the eyes and the brain. It was first described in two siblings who had ...

Behavioral variant frontotemporal dementia (bvFTD) is a progressive brain disorder that mainly damages the frontal and temporal lobes, the regions that control ...

Migraine with brainstem aura is a kind of migraine where the warning signs (called aura) come from the brainstem—the deep part of the brain that helps control ...

Basilar migraine is the older name for migraine with brainstem aura. It is a migraine in which the “warning phase” (the aura) comes from the brainstem—an area ...

Basal ganglia calcification, idiopathic, childhood-onset means calcium-like deposits build up inside deep brain areas called the basal ganglia (and sometimes ...

Salt-losing tubular disorder (often called salt-losing nephropathy) means the kidneys’ tiny tubes (tubules) cannot reabsorb enough salt (mainly sodium and ...

COFS syndrome is a very rare, inherited, progressive disorder that starts before birth and affects the brain, eyes, face, and skeleton. Babies are usually born ...