From HPO
Elevated urine N-acetylaspartic acid level- MedGen UID:
- 1841756
- •Concept ID:
- C5826558
- •
- Finding
The amount of N-acetylaspartate in the urine, when corrected for urine concentration, is above upper limit of normal. This feature can be measured using gas chromatography-mass spectrometry.
Hearing impairment- MedGen UID:
- 235586
- •Concept ID:
- C1384666
- •
- Disease or Syndrome
A decreased magnitude of the sensory perception of sound.
Opisthotonus- MedGen UID:
- 56246
- •Concept ID:
- C0151818
- •
- Sign or Symptom
Abnormal pyramidal sign- MedGen UID:
- 68582
- •Concept ID:
- C0234132
- •
- Sign or Symptom
Functional neurological abnormalities related to dysfunction of the pyramidal tract.
CNS demyelination- MedGen UID:
- 137898
- •Concept ID:
- C0338474
- •
- Disease or Syndrome
A loss of myelin from nerve fibers in the central nervous system.
Bilateral tonic-clonic seizure- MedGen UID:
- 141670
- •Concept ID:
- C0494475
- •
- Sign or Symptom
A bilateral tonic-clonic seizure is a seizure defined by a tonic (bilateral increased tone, lasting seconds to minutes) and then a clonic (bilateral sustained rhythmic jerking) phase.
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).
Epileptic spasm- MedGen UID:
- 315948
- •Concept ID:
- C1527366
- •
- Disease or Syndrome
A sudden flexion, extension, or mixed extension-flexion of predominantly proximal and truncal muscles that is usually more sustained than a myoclonic movement but not as sustained as a tonic seizure. Limited forms may occur
Developmental regression- MedGen UID:
- 324613
- •Concept ID:
- C1836830
- •
- Disease or Syndrome
Loss of developmental skills, as manifested by loss of developmental milestones.
Multifocal epileptiform discharges- MedGen UID:
- 866864
- •Concept ID:
- C4021219
- •
- Finding
An abnormality in cerebral electrical activity recorded along the scalp by electroencephalography (EEG) and being identified at multiple locations (foci).
Elevated brain N-acetyl aspartate level by MRS- MedGen UID:
- 1369723
- •Concept ID:
- C4476572
- •
- Finding
An increase in the level of N-acetyl aspartate in the brain identified by magnetic resonance spectroscopy (MRS).
Brain atrophy- MedGen UID:
- 1643639
- •Concept ID:
- C4551584
- •
- Disease or Syndrome
Partial or complete wasting (loss) of brain tissue that was once present.
Increased CSF N-acetylaspartic acid concentration- MedGen UID:
- 1689724
- •Concept ID:
- C5139236
- •
- Finding
An abnormally increased concentration of N-acetylaspartic acid in the cerebrospinal fluid (CSF).
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.
Macrocephaly- MedGen UID:
- 745757
- •Concept ID:
- C2243051
- •
- Finding
Occipitofrontal (head) circumference greater than 97th centile compared to appropriate, age matched, sex-matched normal standards. Alternatively, a apparently increased size of the cranium.
Delayed closure of the anterior fontanelle- MedGen UID:
- 825928
- •Concept ID:
- C3840083
- •
- Finding
A delay in closure (ossification) of the anterior fontanelle, which generally undergoes closure around the 18th month of life.
Microcephaly- MedGen UID:
- 1644158
- •Concept ID:
- C4551563
- •
- Finding
Head circumference below 2 standard deviations below the mean for age and gender.
Increased circulating N-acetylaspartic acid concentration- MedGen UID:
- 1701810
- •Concept ID:
- C5139235
- •
- Finding
Concentration of N-acetylaspartic acid in the blood circulation above the upper limit of normal.
Reduced aspartoacylase activity in cultured fibroblasts- MedGen UID:
- 1054465
- •Concept ID:
- CN377162
- •
- Finding
Acitivity of aspartoacylase below the lower limit of normal in cultured fibroblasts. Aspartoacylase (EC 3.5.1.15), also called aminoacylase-2, is an enzyme that hydrolyzes N-acetyl-L-aspartic acid (NAA) to aspartate and acetate.
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.
Blindness- MedGen UID:
- 99138
- •Concept ID:
- C0456909
- •
- Disease or Syndrome
Blindness is the condition of lacking visual perception defined as a profound reduction in visual perception. On the 6m visual acuity scale, blindness is defined as less than 3/60. On the 20ft visual acuity scale, blindness is defined as less than 20/400. On the decimal visual acuity scale, blindness is defined as less than 0.05. Blindness is typically characterized by a visual field of no greater than 10 degrees in radius around central fixation.
Visual impairment- MedGen UID:
- 777085
- •Concept ID:
- C3665347
- •
- Finding
Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery.
- Abnormality of metabolism/homeostasis
- Abnormality of the eye
- Abnormality of the genitourinary system
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system
- Ear malformation