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Signs of Angelman syndrome

Symptoms of Angelman syndrome

The list of medical symptoms mentioned in various sources for Angelman syndrome may include:

Note that Angelman syndrome symptoms usually refers to various medical symptoms known to a patient, but the phrase Angelman syndrome signs may often refer to those signs that are only noticable by a doctor.

Signs or Symptoms of Angelman syndrome:

Genes and Disease by the National Center for Biotechnology (Excerpt)

Angelman syndrome (AS) is an uncommon neurogenetic disorder characterized by mental retardation, abnormal gait, speech impairment, seizures, and an inappropriate happy demeanor that includes frequent laughing, smiling, and excitability. The uncoordinated gait and laughter have caused some people to refer to this disorder as the "happy puppet" syndrome. (Source: Genes and Disease by the National Center for Biotechnology)

NINDS Angelman Syndrome Information Page: NINDS (Excerpt)

Angelman syndrome is a neurological disorder characterized by severe congenital mental retardation, unusual facial appearance, and muscular abnormalities. Symptoms of Angelman syndrome include unstable jerky gait, hand flapping, unusually happy demeanor, developmental delay, lack of or diminished speech, and microcephaly (small head). Epilepsy may develop in the early years of life, however it may decrease with age. Patients may also have balance problems. (Source: excerpt from NINDS Angelman Syndrome Information Page: NINDS)

Symptom statistics for Angelman syndrome:

The following are statistics from various sources about the signs or symptoms of Angelman syndrome or other related medical signs or issues:

  • 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)
  • more stats...»

More Symptoms of Angelman syndrome:

More detailed symptom information may be found on the symptoms of Angelman syndrome article. In addition to the above medical information, to get a full picture of the possible signs or symptoms of this condition and also possibly the signs and symptoms of its related medical conditions, it may be necessary to examine symptoms that may be caused by:

Medical articles on signs and symptoms:

These general reference articles may be related to medical signs and symptoms of disease in general:

What are the signs of Angelman syndrome?

The phrase "signs of Angelman syndrome" should, strictly speaking, refer only to those signs and symptoms of Angelman syndrome that are not readily apparent to the patient. The word "symptoms of Angelman syndrome" is the more general meaning; see symptoms of Angelman syndrome.

The signs and symptom information on this page attempts to provide a list of some possible signs and symptoms of Angelman syndrome. This medical information about signs and symptoms for Angelman syndrome has been gathered from various sources, may not be fully accurate, and may not be the full list of Angelman syndrome signs or Angelman syndrome symptoms. Furthermore, signs and symptoms of Angelman syndrome may vary on an individual basis for each patient. Only your doctor can provide adequate diagnosis of any signs or symptoms and whether they are indeed Angelman syndrome symptoms.

 

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