25,729 articles
Neuroendocrine tumor of the rectum
Neuroendocrine tumor of the rectum (rectal NET), a rare epithelial tumor of enterochromaffin cell origin, usually mid-rectum, slow-growing and often incidental; graded G1–G3 and treated by endoscopic or surgical resection based on size, grade, and nodal status.
Neuroendoscopes
Neuroendoscopes (neuroendoscopes, MeSH D044582) are rigid or flexible endoscopic instruments for visual examination and surgery within the nervous system, used in hydrocephalus, intraventricular tumors, hemorrhage, and skull base procedures.
Neuroendoscopy
Neuroendoscopy is a minimally invasive neurosurgical technique using an endoscope, introduced through a burr hole or the nose, to treat disease inside the brain ventricles and skull base.
Neurofeedback
Neurofeedback (EEG biofeedback, neurotherapy): real-time feedback of brain activity to train self-regulation, founded on Kamiya's 1960s alpha work and Sterman's SMR epilepsy research; ADHD meta-analyses find no stand-alone benefit.
Neuroferritinopathy
Neuroferritinopathy (hereditary ferritinopathy, NBIA3) is a rare autosomal dominant adult-onset movement disorder from FTL ferritin light chain mutations, causing brain iron accumulation, chorea or dystonia, low serum ferritin, and basal ganglia cavitation on MRI.
Neurofibrillary tangle
Neurofibrillary tangles: intracellular aggregates of hyperphosphorylated tau in paired helical filaments, defining lesions of Alzheimer's disease, staged by the Braak system, tracked by tau PET and MTBR-tau243, and targeted by etalanetug.
Neurofibroma
Neurofibroma: benign peripheral nerve sheath tumor of Schwann cell origin, named by von Recklinghausen in 1882; occurs sporadically or in NF1, with dermal and plexiform subtypes, treated by surgery or selumetinib.
Neurofibromatosis
Neurofibromatosis (von Recklinghausen's disease) is a group of autosomal dominant tumor-predisposition disorders: NF1 (chromosome 17, neurofibromin), NF2-related schwannomatosis (chromosome 22, merlin), and schwannomatosis, causing nerve sheath tumors, skin lesions, and hearing loss.
Neurofibromatosis type 3
Neurofibromatosis type 3 (NF3), ICD-11 code LD2D.12, is a legacy designation for a third neurofibromatosis form; historically the mixed type (Riccardi 1982), later segmental (Carey 1986), now outside the NF1/NF2-related schwannomatosis/schwannomatosis framework.
Neurofibromatosis type II
Neurofibromatosis type II, or NF2-related schwannomatosis, is a genetic tumor predisposition syndrome causing bilateral vestibular schwannomas, meningiomas, and spinal ependymomas, caused by NF2 gene variants.
Neurogenic arthrogryposis multiplex congenita
Neurogenic arthrogryposis multiplex congenita (ORPHA:1143, OMIM 208100, 618766) is a rare autosomal recessive AMC subtype with neonatal onset, caused by motor neuron or peripheral nerve defects leading to fetal akinesia, multiple joint contractures, and neurogenic muscle atrophy; genes include DST, ZC4H2, DYNC1H1, KIF21A.
Neurogenic shock
Neurogenic shock: distributive shock from loss of sympathetic tone after spinal cord injury above T6, causing hypotension with bradycardia and warm skin; treated with fluids then norepinephrine to MAP targets.
Neurogenins
Neurogenins (NEUROG1, NEUROG2, NGN1/2) are atonal-related bHLH proneural transcription factors that determine neuronal fate in vertebrate placodes, cortex, spinal cord, and reprogramming.
Neuroimaging
Neuroimaging: imaging of brain structure and function using CT, MRI, fMRI, PET, SPECT, EEG, and MEG. Hemodynamic methods give millimeter spatial but seconds-scale temporal resolution; EEG/MEG give millisecond timing; fMRI has largely replaced PET in research.
Neuroinformatics
Neuroinformatics is a discipline combining neuroscience with informatics, building databases, computational models, and tools that let researchers share and analyze brain data across all scales.
Neuroleptic malignant syndrome
Neuroleptic malignant syndrome (NMS, syndrome malin des neuroleptiques) is a life-threatening reaction to dopamine antagonists, mainly antipsychotics, causing fever, rigidity, altered mental status, and autonomic instability; treated by stopping the drug, supportive care, and dantrolene.
Neurological Diagnostic Techniques
Neurological diagnostic techniques: neurological examination, blood, genetic, and CSF tests, MRI and CT imaging, EEG, EMG, nerve conduction, evoked potentials, and angiography used to diagnose brain, spinal cord, and nerve disorders.
Neurological disorder
Neurological disorder: any condition affecting the brain, spinal cord, or nerves, from epilepsy and migraine to stroke and dementia. Leading cause of ill health worldwide, affecting over 1 in 3 people; WHO's IGAP 2022–2031 targets its care.
Neurological examination
Neurological examination: structured clinical assessment of brain, spinal cord, nerves, and muscle receptors; components include mental status, cranial nerves, motor, sensory, reflexes; modern form 1850–1914; NIHSS quantifies stroke severity.
Neurological research
Neurological Research (Neurol Res), a peer-reviewed journal of neurosurgery, neurology, and neurosciences founded 1979, ISSN 0161-6412/1743-1328, published by Taylor & Francis since 2016, MEDLINE-indexed, hybrid open access.
Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology
Neurological Sciences is a bimonthly peer-reviewed neurology journal published in Milan by Springer; official journal of the Italian Neurological Society, founded 1979 as the Italian Journal of Neurological Sciences, renamed 2000, ISSN 1590-1874.
Neurology
Neurology: medical specialty for diagnosis and treatment of nervous system disorders. Emerged from internal medicine and psychiatry; ABPN 1934, AAN 1948; US workforce 24,950 clinicians in 2025.
Neurolymphomatosis
Neurolymphomatosis (NL): rare infiltration of peripheral nerves, roots, plexuses, or cranial nerves by malignant lymphocytes, usually non-Hodgkin lymphoma; painful asymmetric neuropathy, diagnosed by biopsy and FDG-PET/MRI, median survival 18 months.
Neurolysis
Neurolysis is a pain procedure that deliberately destroys a nerve using chemical injection, heat, cold, or surgery, giving weeks-to-months relief, most often for cancer pain via celiac plexus block.
Neuroma
Neuroma: a non-neoplastic, disorganized proliferation of nerve tissue after peripheral nerve injury, also called Morton's neuroma (perineural fibrosis of the foot's plantar digital nerve), causing neuropathic pain.
Neuroma of amputation stump
Neuroma of amputation stump, or amputation neuroma, is a disorganized mass of regenerating nerve fibers that forms at a severed nerve end after amputation, causing localized residual limb pain.
Neuromodulation therapy
Neuromodulation therapy is a class of treatments that alter nerve activity through electrical, magnetic, or chemical stimulation, used for chronic pain, movement disorders, epilepsy, and psychiatric disease.
Neuromuscular blockade
Neuromuscular blockade, also called neuromuscular block, is drug-induced paralysis of skeletal muscle used for intubation, surgery, and ventilation, introduced with curare in anesthesia in 1942.
Neuromuscular disease
Neuromuscular disease: disorders of motor neurons, peripheral nerves, the neuromuscular junction, or muscle, causing weakness. Includes ALS, SMA, myasthenia gravis, CMT, and muscular dystrophies; treated with multidisciplinary care and new AAV gene therapies.
Neuromuscular monitoring
Neuromuscular monitoring is an anesthesia technique that measures neuromuscular blockade by stimulating a peripheral nerve and recording the muscle response, guiding dosing, reversal, and extubation.