From HPO
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.
Generalized-onset seizure- MedGen UID:
- 115963
- •Concept ID:
- C0234533
- •
- Disease or Syndrome
A generalized-onset seizure is a type of seizure originating at some point within, and rapidly engaging, bilaterally distributed networks. The networks may include cortical and subcortical structures but not necessarily the entire cortex.
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.
Cerebellar hypoplasia- MedGen UID:
- 120578
- •Concept ID:
- C0266470
- •
- Congenital Abnormality
Cerebellar hypoplasia is a descriptive term implying a cerebellum with a reduced volume, but a normal shape and is stable over time.
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.
Delayed speech and language development- MedGen UID:
- 105318
- •Concept ID:
- C0454644
- •
- Finding
A degree of language development that is significantly below the norm for a child of a specified age.
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.
Hypsarrhythmia- MedGen UID:
- 195766
- •Concept ID:
- C0684276
- •
- Finding
Hypsarrhythmia is abnormal interictal high amplitude waves and a background of irregular spikes. There is continuous (during wakefulness), high-amplitude (>200 Hz), generalized polymorphic slowing with no organized background and multifocal spikes demonstrated by electroencephalography (EEG).
Delayed gross motor development- MedGen UID:
- 332508
- •Concept ID:
- C1837658
- •
- Finding
A type of motor delay characterized by a delay in acquiring the ability to control the large muscles of the body for walking, running, sitting, and crawling.
Hypoplasia of the brainstem- MedGen UID:
- 334226
- •Concept ID:
- C1842688
- •
- Finding
Underdevelopment of the brainstem.
Hypoplasia of the pons- MedGen UID:
- 341246
- •Concept ID:
- C1848529
- •
- Finding
Underdevelopment of the pons.
Ventriculomegaly- MedGen UID:
- 480553
- •Concept ID:
- C3278923
- •
- Finding
An increase in size of the ventricular system of the brain.
Infantile spasms- MedGen UID:
- 854616
- •Concept ID:
- C3887898
- •
- Disease or Syndrome
Infantile spasms represent a subset of "epileptic spasms". Infantile Spasms are epileptic spasms starting in the first year of life (infancy).
Delayed early-childhood social milestone development- MedGen UID:
- 868509
- •Concept ID:
- C4022906
- •
- Finding
A failure to meet one or more age-related milestones of social behavior.
Delayed fine motor development- MedGen UID:
- 869257
- •Concept ID:
- C4023681
- •
- Finding
A type of motor delay characterized by a delay in acquiring the ability to control the fingers and hands.
Thick cerebral cortex- MedGen UID:
- 870522
- •Concept ID:
- C4024970
- •
- Anatomical Abnormality
Myoclonic seizure- MedGen UID:
- 1385980
- •Concept ID:
- C4317123
- •
- Sign or Symptom
A myoclonic seizure is a type of motor seizure characterized by sudden, brief (<100 ms) involuntary single or multiple contraction of muscles or muscle groups of variable topography (axial, proximal limb, distal). Myoclonus is less regularly repetitive and less sustained than is clonus.
Periventricular ribbonlike heterotopia- MedGen UID:
- 1698492
- •Concept ID:
- C5139311
- •
- Disease or Syndrome
Heterotopia that forms a continuous wavy line along the ventricular wall.
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.
Hypotonia- MedGen UID:
- 10133
- •Concept ID:
- C0026827
- •
- Finding
Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system