Andersen-Tawil syndrome history and symptoms

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Vamsikrishna Gunnam M.B.B.S [2]

• The most common symptoms of Andersen-Tawil Syndrome include periodic paralysis, ventricular arrhythmias, syncope, muscular weakness, developmental abnormalities, sudden cardiac death and seizures.

Patients with Andersen-Tawil Syndrome may have a positive history of:

• Periodic paralysis
• Cardiac symptoms
• Ventricular arrhythmias

Common symptoms of Andersen-Tawil Syndrome include:^[1][2]

• Periodic paralysis which are related to hypokalemia and are spontaneous in nature
• Ventricular arrhythmias
• Extrasystoles: Premature ventricular contraction
• Arrhythmic syncope
• Intermittent muscular weakness
• Skeletal developmental abnormalities

Less common symptoms of Andersen-Tawil Syndrome include:

• SCD(sudden cardiac death) is due to sudden hemodynamic collapse
• SCA: Spinocerebellar ataxia
• Generalized seizures, which are often misdiagnosed as primary seizure disorder
• Learning difficulties

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