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Diseases

Genetic and Rare Diseases Information Center (GARD)

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Andersen-Tawil syndrome


Other Names for this Disease
  • Andersen cardiodysrhythmic periodic paralysis
  • Andersen syndrome
  • Long QT syndrome 7
  • LQT7
  • Periodic paralysis, potassium-sensitive cardiodysrhythmic type
More Names
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Symptoms


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What are the signs and symptoms of Andersen-Tawil syndrome?

Anderson-Tawil syndrome causes episodes of muscle weakness (periodic paralysis), changes in heart rhythm (arrhythmia), and developmental abnormalities. The most common changes affecting the heart are ventricular arrhythmia, which is a disruption in the rhythm of the heart's lower chambers, and long QT syndrome. Long QT syndrome is a heart condition that causes the heart muscle to take longer than usual to recharge between beats. If untreated, the irregular heartbeats can lead to discomfort, fainting, or cardiac arrest.[1]

Physical abnormalities associated with Andersen-Tawil syndrome typically affect the head, face, and limbs. These features often include a very small lower jaw (micrognathia), dental abnormalities, low-set ears, widely spaced eyes, and unusual curving of the fingers or toes (clinodactyly). Some affected people also have short stature and an abnormal curvature of the spine (scoliosis).[1]
Last updated: 10/11/2011

References
  1. Andersen-Tawil syndrome. Genetics Home Reference. April 2006; http://ghr.nlm.nih.gov/condition/andersen-tawil-syndrome. Accessed 10/11/2011.