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Statistics about Angelman syndrome

Symptom statistics for Angelman syndrome:

The following are statistics from various sources about the symptoms of Angelman syndrome:

  • 100% of people with Angelman Syndrome have functionally severe developmental delay in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 100% of people with Angelman Syndrome have speech impairment in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 100% of people with Angelman Syndrome have movement or balance disorder, usually ataxia of gait and/or tremulous movement of limbs in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 100% of people with Angelman Syndrome have behavioural uniqueness such as frequent laughter/smiling, apparent happy demeanour, easily excitable personality often with hand flapping movements, hyper motoric behaviour and short attention span in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 80% of people with Angelman Syndrome have a delayed or disproportionate head circumference growth in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 80% of people with Angelman Syndrome have seizures which usually start before the age of 3 in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 80% of people with Angelman Syndrome have abnormal EEG’s in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome have a flat area at the back of the head in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome have a groove at the back of the head in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome have a protruding tongue in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome exhibit tongue thrusting with sucking or swallowing disorders in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome have a feeding problems while infants in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome have a projecting jaw in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome have a wide mouth with spread out teeth in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome drool frequently in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome chew or mouth excessively in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome have strabisumsin the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome have hypopigmented skin in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome have a hyperactive lower limb deep tendon reflexes in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome are sensitive to heat in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome suffer sleep disturbances in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • 20-80% of people with Angelman Syndrome are fascinated by water in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • more about symptoms...»

Prevalence and incidence statistics for Angelman syndrome:

See also prevalence and incidence page for Angelman syndrome

Prevalance of Angelman syndrome: 1 per 12,000 - 20,000 people are affected by Angelman syndrome, Genetics Home Reference website

Prevalance Rate: approx 1 in 12,000 or 0.01% or 22,666 people in USA [about data]

Prevelance statistics about Angelman syndrome:

The following statistics relate to the prevalence of Angelman syndrome:

  • Angelman Syndrome affects all races and sexes equally in the US (Dr Harry Angelman, Angelman Syndrome Foundation)
  • There are 1000 to 5000 cases of Angelman Syndrome in the US and Canada (Dr Harry Angelman, Angelman Syndrome Foundation)
  • more about prevalence...»

Angelman syndrome: Rare Disease Status

Angelman syndrome is listed as a "rare disease" by the Office of Rare Diseases (ORD)...more »

Angelman syndrome: Rare Disease Status

Angelman syndrome is listed as a "rare disease" by Ophanet, a consortium of European partners ...more »

About statistics:

This page presents a variety of statistics about Angelman syndrome. The term 'prevalence' of Angelman syndrome usually refers to the estimated population of people who are managing Angelman syndrome at any given time. The term 'incidence' of Angelman syndrome refers to the annual diagnosis rate, or the number of new cases of Angelman syndrome diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

 

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