From HPO
Seizure- MedGen UID:
- 20693
- •Concept ID:
- C0036572
- •
- Sign or Symptom
A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.
Intellectual disability, severe- MedGen UID:
- 48638
- •Concept ID:
- C0036857
- •
- Mental or Behavioral Dysfunction
Severe mental retardation is defined as an intelligence quotient (IQ) in the range of 20-34.
Hyperreflexia- MedGen UID:
- 57738
- •Concept ID:
- C0151889
- •
- Finding
Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.
Cerebral atrophy- MedGen UID:
- 116012
- •Concept ID:
- C0235946
- •
- Disease or Syndrome
Atrophy (wasting, decrease in size of cells or tissue) affecting the cerebrum.
Lissencephaly- MedGen UID:
- 78604
- •Concept ID:
- C0266463
- •
- Finding
A spectrum of malformations of cortical development caused by insufficient neuronal migration that subsumes the terms agyria, pachygyria and subcortical band heterotopia. See also neuropathological definitions for 2-, 3-, and 4-layered lissencephaly.
Polymicrogyria- MedGen UID:
- 78605
- •Concept ID:
- C0266464
- •
- Congenital Abnormality
Polymicrogyria is a congenital malformation of the cerebral cortex characterized by abnormal cortical layering (lamination) and an excessive number of small gyri (folds).
Macrogyria- MedGen UID:
- 120579
- •Concept ID:
- C0266483
- •
- Congenital Abnormality
Pachygyria is a malformation of cortical development with abnormally wide gyri with sulci 1,5-3 cm apart and abnormally thick cortex measuring more than 5 mm (radiological definition). See also neuropathological definitions for 2-, 3-, and 4-layered lissencephaly.
Hypoplasia of the corpus callosum- MedGen UID:
- 138005
- •Concept ID:
- C0344482
- •
- Congenital Abnormality
Underdevelopment of the corpus callosum.
Spastic tetraplegia- MedGen UID:
- 98433
- •Concept ID:
- C0426970
- •
- Disease or Syndrome
Spastic paralysis affecting all four limbs.
Global developmental delay- MedGen UID:
- 107838
- •Concept ID:
- C0557874
- •
- Finding
A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.
Cerebellar atrophy- MedGen UID:
- 196624
- •Concept ID:
- C0740279
- •
- Disease or Syndrome
Cerebellar atrophy is defined as a cerebellum with initially normal structures, in a posterior fossa with normal size, which displays enlarged fissures (interfolial spaces) in comparison to the foliae secondary to loss of tissue. Cerebellar atrophy implies irreversible loss of tissue and result from an ongoing progressive disease until a final stage is reached or a single injury, e.g. an intoxication or infectious event.
Hypoplasia of the brainstem- MedGen UID:
- 334226
- •Concept ID:
- C1842688
- •
- Finding
Underdevelopment of the brainstem.
Ventriculomegaly- MedGen UID:
- 480553
- •Concept ID:
- C3278923
- •
- Finding
An increase in size of the ventricular system of the brain.
Cerebral white matter hypoplasia- MedGen UID:
- 892337
- •Concept ID:
- C4022908
- •
- Finding
Underdevelopment of the cerebral white matter.
Bilateral tonic-clonic seizure with generalized onset- MedGen UID:
- 1368929
- •Concept ID:
- C4476643
- •
- Sign or Symptom
A bilateral tonic-clonic seizure with generalized onset is a type of bilateral tonic-clonic seizure characterized by generalized onset; these seizures rapidly engage networks in both hemispheres at the start of the seizure.
Hypertonia- MedGen UID:
- 10132
- •Concept ID:
- C0026826
- •
- Finding
A condition in which there is increased muscle tone so that arms or legs, for example, are stiff and difficult to move.
Microcephaly- MedGen UID:
- 1644158
- •Concept ID:
- C4551563
- •
- Finding
Head circumference below 2 standard deviations below the mean for age and gender.
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system