Why might a child be tested for Andersen-Tawil Syndrome?

Andersen-Tawil Syndrome may be suspected in a child with periods of muscle weakness (periodic paralysis), changes in heart rhythm (arrhythmia), and physical features such ears that are lower than normal, eyes that are widely spaced, a small lower jaw (micrognathia), small hands and feet, a shorter than average height, or if they have at least one other family member with the condition.

Other Questions About Andersen-tawil syndrome

• Why might a child be tested for Andersen-Tawil Syndrome?
• Who else in my family should I test for Andersen-Tawil Syndrome?
• Where do I find other people with Andersen-Tawil Syndrome?
• What results from changes to the KCNJ2 gene?
• What is the usual abbreviation for Andersen-Tawil Syndrome?