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Results: 1 to 20 of 39

1.

Pelizaeus-Merzbacher disease

PLP1-related disorders of central nervous system myelin formation include a range of phenotypes from Pelizaeus-Merzbacher disease (PMD) to spastic paraplegia 2 (SPG2). PMD typically manifests in infancy or early childhood with nystagmus, hypotonia, and cognitive impairment; the findings progress to severe spasticity and ataxia. Life span is shortened. SPG2 manifests as spastic paraparesis with or without CNS involvement and usually normal life span. Intrafamilial variation of phenotypes can be observed, but the signs are usually fairly consistent within families. Female carriers may manifest mild to moderate signs of the disease. [from GeneReviews]

MedGen UID:
61440
Concept ID:
C0205711
Disease or Syndrome
2.

Atrophy

Decrease in the size of a cell, tissue, organ, or multiple organs, associated with a variety of pathological conditions such as abnormal cellular changes, ischemia, malnutrition, or hormonal changes. [from MeSH]

MedGen UID:
83084
Concept ID:
C0333641
Pathologic Function
3.

Primary lateral sclerosis

MedGen UID:
57591
Concept ID:
C0154682
Disease or Syndrome
4.

Sclerosis

hardening of the tissue [from CHV]

MedGen UID:
48587
Concept ID:
C0036429
Pathologic Function
5.

Disorder of lysosomal enzyme

Inborn errors of metabolism characterized by defects in specific lysosomal hydrolases and resulting in intracellular accumulation of unmetabolized substrates. [from MeSH]

MedGen UID:
43098
Concept ID:
C0085078
Disease or Syndrome
6.

Muscle atrophy

Derangement in size and number of muscle fibers occurring with aging, reduction in blood supply, or following immobilization, prolonged weightlessness, malnutrition, and particularly in denervation. [from MeSH]

MedGen UID:
7754
Concept ID:
C0026846
Disease or Syndrome
7.

Disease

Any abnormal condition of the body or mind that causes discomfort, dysfunction, or distress to the person affected or those in contact with the person. The term is often used broadly to include injuries, disabilities, syndromes, symptoms, deviant behaviors, and atypical variations of structure and function. [from NCI]

MedGen UID:
4347
Concept ID:
C0012634
Disease or Syndrome
8.

Amyotrophic lateral sclerosis

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease involving both upper motor neurons (UMN) and lower motor neurons (LMN). UMN signs include hyperreflexia, extensor plantar response, increased muscle tone, and weakness in a topographic representation. LMN signs include weakness, muscle wasting, hyporeflexia, muscle cramps, and fasciculations. Initial presentation varies. Affected individuals typically present with either asymmetric focal weakness of the extremities (stumbling or poor handgrip) or bulbar findings (dysarthria, dysphagia). Other findings may include muscle fasciculations, muscle cramps, and labile affect, but not necessarily mood. Regardless of initial symptoms, atrophy and weakness eventually affect other muscles. The mean age of onset is 56 years in individuals with no known family history and 46 years in individuals with more than one affected family member (familial ALS or FALS). Average disease duration is about three years, but it can vary significantly. Death usually results from compromise of the respiratory muscles. [from GeneReviews]

MedGen UID:
274
Concept ID:
C0002736
Disease or Syndrome
9.

disease

MedGen UID:
798428
Concept ID:
CN204926
Disease or Syndrome
10.

Amyotrophic lateral sclerosis

MedGen UID:
506059
Concept ID:
CN006437
Finding
11.

Spinal muscular atrophy

Muscular weakness and atrophy related to loss of the motor neurons of the spinal cord and brainstem. [from HPO]

MedGen UID:
506049
Concept ID:
CN006358
Finding
12.

Amyotrophy

MedGen UID:
346831
Concept ID:
C1858480
Finding
13.

Parkinson's disease

Parkinsonism refers to all clinical states characterized by tremor, muscle rigidity, slowed movement (bradykinesia) and often postural instability. Parkinson disease is the primary and most common form of parkinsonism. Psychiatric manifestations, which include depression and visual hallucinations, are common but not uniformly present. Dementia eventually occurs in at least 20% of cases. The most common sporadic form of Parkinson disease manifests around age 60; however, young-onset and even juvenile presentations are seen. [from GeneReviews]

MedGen UID:
10590
Concept ID:
C0030567
Disease or Syndrome
14.

Spinal muscular atrophy

Spinal muscular atrophy (SMA) is characterized by progressive muscle weakness resulting from degeneration and loss of the anterior horn cells (i.e., lower motor neurons) in the spinal cord and the brain stem nuclei. Onset ranges from before birth to adolescence or young adulthood. Poor weight gain, sleep difficulties, pneumonia, scoliosis, and joint contractures are common complications. Before the genetic basis of SMA was understood, it was classified into clinical subtypes; however, it is now apparent that the phenotype of SMA associated with disease-causing mutations of SMN1 spans a continuum without clear delineation of subtypes. Nonetheless, classification by age of onset and maximum function achieved is useful for prognosis and management; subtypes include: SMA 0 (proposed), with prenatal onset and severe joint contractures, facial diplegia, and respiratory failure; SMA I, with onset before age six months; SMA II, with onset between age six and 12 months; SMA III, with onset in childhood after age 12 months and ability to walk at least 25 meters achieved; and SMA IV, with adult onset. [from GeneReviews]

MedGen UID:
7755
Concept ID:
C0026847
Disease or Syndrome
15.

Alzheimer's disease

Alzheimer disease (AD) is characterized by dementia that typically begins with subtle and poorly recognized failure of memory and slowly becomes more severe and, eventually, incapacitating. Other common findings include confusion, poor judgment, language disturbance, agitation, withdrawal, and hallucinations. Occasionally, seizures, Parkinsonian features, increased muscle tone, myoclonus, incontinence, and mutism occur. Death usually results from general inanition, malnutrition, and pneumonia. The typical clinical duration of the disease is eight to ten years, with a range from one to 25 years. Approximately 25% of all AD is familial (i.e., =2 persons in a family have AD) of which approximately 95% is late onset (age >60-65 years) and 5% is early onset (age <65 years). [from GeneReviews]

MedGen UID:
1853
Concept ID:
C0002395
Disease or Syndrome
16.

Genetic Diseases, Inborn

Diseases that are caused by genetic mutations present during embryo or fetal development, although they may be observed later in life. The mutations may be inherited from a parent's genome or they may be acquired in utero. [from MeSH]

MedGen UID:
181981
Concept ID:
C0950123
Disease or Syndrome
17.

Tauopathies

Neurodegenerative disorders involving deposition of abnormal tau protein isoforms (TAU PROTEINS) in neurons and glial cells in the brain. Pathological aggregations of tau proteins are associated with mutation of the tau gene on chromosome 17 in patients with ALZHEIMER DISEASE; DEMENTIA; PARKINSONIAN DISORDERS; progressive supranuclear palsy (SUPRANUCLEAR PALSY, PROGRESSIVE); and corticobasal degeneration. [from MeSH]

MedGen UID:
181880
Concept ID:
C0949664
Disease or Syndrome
18.

Juvenile Parkinson's disease

MedGen UID:
155699
Concept ID:
C0752105
Disease or Syndrome
19.

Diagnosis, Psychiatric

MedGen UID:
138165
Concept ID:
C0376338
Mental or Behavioral Dysfunction
20.

Neurodegenerative Disorders

A disorder of the central nervous system characterized by gradual and progressive loss of neural tissue and neurologic function. [from NCI]

MedGen UID:
101195
Concept ID:
C0524851
Disease or Syndrome

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