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What does long QT Syndrome cause?

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Quick Answer

Long QT syndrome is a potentially fatal heart rhythm disorder that causes fast, erratic heartbeats that often trigger seizures or fainting, according to Mayo Clinic. Genetic mutations and some medications and medical conditions cause the disorder.

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Full Answer

Although symptoms of the disorder often occur in early life, some people do not experience symptoms until middle age, advises Mayo Clinic. In most people with long QT syndrome, the symptoms of the disorder manifest prior to age 40.

Long QT syndrome is treated with medications and physical activity limits, reports Mayo Clinic. Treatment may also require avoiding medications that cause its symptoms. In some cases, surgery to implant a device to control the heart’s rhythm is advised.

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