From HPO
Hearing impairment- MedGen UID:
- 235586
- •Concept ID:
- C1384666
- •
- Disease or Syndrome
A decreased magnitude of the sensory perception of sound.
Cerebellar ataxia- MedGen UID:
- 849
- •Concept ID:
- C0007758
- •
- Disease or Syndrome
Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).
Gliosis- MedGen UID:
- 4899
- •Concept ID:
- C0017639
- •
- Pathologic Function
Gliosis is the focal proliferation of glial cells in the central nervous system.
Neurodegeneration- MedGen UID:
- 17999
- •Concept ID:
- C0027746
- •
- Cell or Molecular Dysfunction
Progressive loss of neural cells and tissue.
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.
Hyperreflexia- MedGen UID:
- 57738
- •Concept ID:
- C0151889
- •
- Finding
Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.
Unsteady gait- MedGen UID:
- 68544
- •Concept ID:
- C0231686
- •
- Finding
A shaky or wobbly manner of walking.
Abnormal pyramidal sign- MedGen UID:
- 68582
- •Concept ID:
- C0234132
- •
- Sign or Symptom
Functional neurological abnormalities related to dysfunction of the pyramidal tract.
Areflexia- MedGen UID:
- 115943
- •Concept ID:
- C0234146
- •
- Finding
Absence of neurologic reflexes such as the knee-jerk reaction.
Cerebral atrophy- MedGen UID:
- 116012
- •Concept ID:
- C0235946
- •
- Disease or Syndrome
Atrophy (wasting, decrease in size of cells or tissue) affecting the cerebrum.
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.
Abnormality of visual evoked potentials- MedGen UID:
- 105509
- •Concept ID:
- C0522214
- •
- Finding
An anomaly of visually evoked potentials (VEP), which are electrical potentials, initiated by brief visual stimuli, which are recorded from the scalp overlying the visual cortex.
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.
Developmental regression- MedGen UID:
- 324613
- •Concept ID:
- C1836830
- •
- Disease or Syndrome
Loss of developmental skills, as manifested by loss of developmental milestones.
Neuronal loss in central nervous system- MedGen UID:
- 342515
- •Concept ID:
- C1850496
- •
- Finding
Decreased nerve conduction velocity- MedGen UID:
- 347509
- •Concept ID:
- C1857640
- •
- Finding
A reduction in the speed at which electrical signals propagate along the axon of a neuron.
Intellectual disability- MedGen UID:
- 811461
- •Concept ID:
- C3714756
- •
- Mental or Behavioral Dysfunction
Intellectual disability, previously referred to as mental retardation, is characterized by subnormal intellectual functioning that occurs during the developmental period. It is defined by an IQ score below 70.
Iron accumulation in brain- MedGen UID:
- 866729
- •Concept ID:
- C4021076
- •
- Finding
An abnormal build up of iron (Fe) in brain tissue.
Abnormal pyramidal tract morphology- MedGen UID:
- 892809
- •Concept ID:
- C4021761
- •
- Anatomical Abnormality
Any structural abnormality of the pyramidal tract, whose chief element, the corticospinal tract, is the only direct connection between the brain and the spinal cord. In addition to the corticospinal tract, the pyramidal system includes the corticobulbar, corticomesencephalic, and corticopontine tracts.
Reduced social responsiveness- MedGen UID:
- 1841569
- •Concept ID:
- C5826975
- •
- Finding
A reduced ability to participate in the back-and-forth flow of social interaction appropriate to culture and developmental level, which is normally characterized by an influence of the behavior of one person on the behavior of another person. This results in difficulty interacting with others through emotional, physical, or verbal communication.
Micrognathia- MedGen UID:
- 44428
- •Concept ID:
- C0025990
- •
- Congenital Abnormality
Developmental hypoplasia of the mandible.
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.
Frontal bossing- MedGen UID:
- 67453
- •Concept ID:
- C0221354
- •
- Congenital Abnormality
Bilateral bulging of the lateral frontal bone prominences with relative sparing of the midline.
Generalized muscle weakness- MedGen UID:
- 155433
- •Concept ID:
- C0746674
- •
- Sign or Symptom
Generalized weakness or decreased strength of the muscles, affecting both distal and proximal musculature.
Generalized hypotonia- MedGen UID:
- 346841
- •Concept ID:
- C1858120
- •
- Finding
Generalized muscular hypotonia (abnormally low muscle tone).
EMG: chronic denervation signs- MedGen UID:
- 871143
- •Concept ID:
- C4025614
- •
- Finding
Evidence of chronic denervation on electromyography.
Prominent forehead- MedGen UID:
- 373291
- •Concept ID:
- C1837260
- •
- Finding
Forward prominence of the entire forehead, due to protrusion of the frontal bone.
Short nose- MedGen UID:
- 343052
- •Concept ID:
- C1854114
- •
- Finding
Distance from nasion to subnasale more than two standard deviations below the mean, or alternatively, an apparently decreased length from the nasal root to the nasal tip.
Nystagmus- MedGen UID:
- 45166
- •Concept ID:
- C0028738
- •
- Disease or Syndrome
Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.
Optic atrophy- MedGen UID:
- 18180
- •Concept ID:
- C0029124
- •
- Disease or Syndrome
Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.
Strabismus- MedGen UID:
- 21337
- •Concept ID:
- C0038379
- •
- Disease or Syndrome
A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.
Visual loss- MedGen UID:
- 784038
- •Concept ID:
- C3665386
- •
- Finding
Loss of visual acuity (implying that vision was better at a certain time point in life). Otherwise the term reduced visual acuity should be used (or a subclass of that).
- Abnormality of head or neck
- Abnormality of the eye
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system
- Ear malformation