From HPO
Short stature- MedGen UID:
- 87607
- •Concept ID:
- C0349588
- •
- Finding
A height below that which is expected according to age and gender norms. Although there is no universally accepted definition of short stature, many refer to "short stature" as height more than 2 standard deviations below the mean for age and gender (or below the 3rd percentile for age and gender dependent norms).
Hearing impairment- MedGen UID:
- 235586
- •Concept ID:
- C1384666
- •
- Disease or Syndrome
A decreased magnitude of the sensory perception of sound.
Seizure- MedGen UID:
- 20693
- •Concept ID:
- C0036572
- •
- Sign or Symptom
A seizure is an intermittent abnormality of nervous system physiology characterised by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.
Corpus callosum, agenesis of- MedGen UID:
- 104498
- •Concept ID:
- C0175754
- •
- Congenital Abnormality
The corpus callosum is the largest fiber tract in the central nervous system and the major interhemispheric fiber bundle in the brain. Formation of the corpus callosum begins as early as 6 weeks' gestation, with the first fibers crossing the midline at 11 to 12 weeks' gestation, and completion of the basic shape by age 18 to 20 weeks (Schell-Apacik et al., 2008). Agenesis of the corpus callosum (ACC) is one of the most frequent malformations in brain with a reported incidence ranging between 0.5 and 70 in 10,000 births. ACC is a clinically and genetically heterogeneous condition, which can be observed either as an isolated condition or as a manifestation in the context of a congenital syndrome (see MOLECULAR GENETICS and Dobyns, 1996). Also see mirror movements-1 and/or agenesis of the corpus callosum (MRMV1; 157600).
Schell-Apacik et al. (2008) noted that there is confusion in the literature regarding radiologic terminology concerning partial absence of the corpus callosum, where various designations have been used, including hypogenesis, hypoplasia, partial agenesis, or dysgenesis.
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.
Cortical dysplasia- MedGen UID:
- 98129
- •Concept ID:
- C0431380
- •
- Congenital Abnormality
The presence of developmental dysplasia of the cerebral cortex.
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.
Attention deficit hyperactivity disorder- MedGen UID:
- 220387
- •Concept ID:
- C1263846
- •
- Mental or Behavioral Dysfunction
Attention deficit-hyperactivity disorder (ADHD) is the most common childhood-onset behavioral disorder, affecting approximately 5 to 10% of children and adolescents (Wolraich et al., 1996). In this condition, persistent inattention and/or hyperactive-impulsive behavior results in impaired social and/or academic functioning. Boys are affected about 8 times more frequently than girls (Zametkin et al., 1990).
Genetic Heterogeneity of Attention Deficit-Hyperactivity Disorder
Susceptibility to ADHD7 (607478) may be conferred by variation in the TPH2 gene (607478) on chromosome 12q21. ADHD8 (619957) is caused by mutation in the CDH2 gene (114020) on chromosome 18q12.
Several loci for susceptibility to ADHD have been mapped, including ADHD1 (608903) on chromosome 16p13, ADHD2 (608904) on chromosome 17p11, ADHD3 (608905) on chromosome 6q12, ADHD4 (608906) on chromosome 5p13, ADHD5 (612311) on 2q21.1, and ADHD6 (612312) on 13q12.11. Also see MOLECULAR GENETICS.
Small cerebral cortex- MedGen UID:
- 325187
- •Concept ID:
- C1837503
- •
- Finding
Reduced size of the cerebral cortex.
Motor delay- MedGen UID:
- 381392
- •Concept ID:
- C1854301
- •
- Finding
A type of Developmental delay characterized by a delay in acquiring motor skills.
Simplified gyral pattern- MedGen UID:
- 413664
- •Concept ID:
- C2749675
- •
- Finding
An abnormality of the cerebral cortex with fewer gyri but with normal cortical thickness. This pattern is usually often associated with congenital microcephaly.
Ventriculomegaly- MedGen UID:
- 480553
- •Concept ID:
- C3278923
- •
- Finding
An increase in size of the ventricular system of the brain.
Intellectual disability- MedGen UID:
- 811461
- •Concept ID:
- C3714756
- •
- Mental or Behavioral Dysfunction
Subnormal intellectual functioning which originates during the developmental period. Intellectual disability, previously referred to as mental retardation, has been defined as an IQ score below 70.
Flat occiput- MedGen UID:
- 332439
- •Concept ID:
- C1837402
- •
- Finding
Reduced convexity of the occiput (posterior part of skull).
Microcephaly- MedGen UID:
- 1644158
- •Concept ID:
- C4551563
- •
- Finding
Head circumference below 2 standard deviations below the mean for age and gender.
Narrow forehead- MedGen UID:
- 326956
- •Concept ID:
- C1839758
- •
- Finding
Width of the forehead or distance between the frontotemporales is more than two standard deviations below the mean (objective); or apparently narrow intertemporal region (subjective).
Sloping forehead- MedGen UID:
- 346640
- •Concept ID:
- C1857679
- •
- Finding
Inclination of the anterior surface of the forehead from the vertical more than two standard deviations above the mean (objective); or apparently excessive posterior sloping of the forehead in a lateral view.
Highly arched eyebrow- MedGen UID:
- 358357
- •Concept ID:
- C1868571
- •
- Finding
Increased height of the central portion of the eyebrow, forming a crescent, semicircular, or inverted U shape.
Proptosis- MedGen UID:
- 41917
- •Concept ID:
- C0015300
- •
- Disease or Syndrome
An eye that is protruding anterior to the plane of the face to a greater extent than is typical.
- Abnormality of head or neck
- Abnormality of the eye
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system
- Ear malformation
- Growth abnormality