The Periodic Paralysis Association (PPA) welcomes you to our non-profit organization!

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Periodic Paralysis is a group of disorders whereby patients become weak due to triggers such as rest after exercise or certain foods.  These disorders are part of a broader class of disorders called ion channelopathies, in which a genetic defect in a muscle ion channel results in symptoms of episodic stiffness or weakness in response to certain triggers.


These questions and more are answered within our site.  Please feel free to browse the menu on the left as well as our highlights at the bottom of this screen!  We welcome you to the PPA and will do our best to assist you as you search for answers about these rare diseases.

For patient view information, read these two articles:

This site does not deal with paralysis due to stroke or spinal cord injury, but does contain some information about sleep paralysis, which is sometimes confused with periodic paralysis.

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Advice Disclaimer

Always seek the advice of your physician or other qualified health provider with any questions about your medical condition. Do not disregard professional medical advice or delay seeking advice or treatment because of something you have read here.

This information is not intended to be a substitute for professional medical advice, diagnosis or treatment.