Moebius syndrome is a rare congenital condition characterized by underdevelopment or absence of the sixth (abducens) and seventh (facial) cranial nerves. This ...

 Mitochondrial Neurogastrointestinal Encephalopathy (MNGIE) is an autosomal-recessive disease caused by mutations in the nuclear gene TYMP, which encodes the ...

Mitochondrial membrane protein-associated neurodegeneration (MPAN), sometimes referred to as mitochondrial membrane protein-associated syndrome, is a rare ...

Mismatch repair cancer syndrome (MMRCS), also known as Turcot syndrome or constitutional mismatch repair-deficiency (CMMRD) syndrome when referring to ...

Millard–Gubler syndrome (MGS), also known as facial abducens hemiplegia syndrome or ventral pontine syndrome, is a rare crossed brainstem syndrome caused by a ...

Mixed intracerebral–intraventricular bleeding (MIIVB) is a medical emergency in which blood escapes from damaged brain-parenchymal vessels, collects inside the ...

A secondary intraparenchymal bleed (secondary ICH) is fresh bleeding that pools inside the brain’s substance because of an identifiable underlying problem—for ...

A primary intraparenchymal bleed—better known as a primary intracerebral hemorrhage (ICH)—occurs when a weakened vessel inside the brain suddenly ruptures and ...

A cortical–subcortical, or lobar, intracerebral hemorrhage (ICH) is a bleeding event that begins in the gray-matter cortex and immediately spreads into the ...

A putaminal (deep ganglionic) hemorrhage is bleeding that begins inside the putamen—one of the basal-ganglia nuclei that sits alongside the internal capsule. ...

A transient ischemic attack (TIA) in the territory of the middle cerebral artery is sometimes called “MCA transient ischemia” or “MCA-syndrome TIA.” It happens ...

Non-dominant-hemisphere MCA syndrome occurs when a blockage or severe narrowing stops blood flow through the main branch of the middle cerebral artery that ...

When the left (language-dominant for ~95 % of right-handed people) middle cerebral artery is suddenly blocked by a clot or ruptures and bleeds, vital brain ...

Hemorrhagic MCA syndrome is a type of intracerebral hemorrhage (ICH) that occurs inside the brain tissue supplied by the middle cerebral artery. Blood suddenly ...

A deep, or lenticulostriate, infarct is a tiny area of dead brain tissue caused by the blockage of one or more lenticulostriate arteries—small penetrating ...

An inferior-division infarct of the Middle Cerebral Artery (MCA) is an ischemic stroke that blocks blood flow to the lower (inferior) branch of the MCA. This ...

Silent cortical infarct is a small area of brain tissue in the outer (cortical) layer that has died because its blood supply was cut off, yet it produces no ...

Stepwise (lacuno-cortical) progression Middle Cerebral Artery (MCA) syndrome is a pattern of ischemic stroke in which small, deep (“lacunar”) infarcts and ...

A malignant frontal infarct is a very large stroke that destroys brain tissue mainly in the frontal-lobe territory supplied by the middle cerebral artery. ...

Spectacular Shrinking Deficit (SSD) is an unusual stroke pattern first described by Mohr in the mid-1980s. A patient presents with a dramatic, classic MCA ...