Periodic Paralysis Awareness

Periodic Paralysis Awareness Periodic Paralysis is a rare genetic disease that causes muscle weakness and paralysis.

Did you know?Andersen Tawil Syndrome, also called ATS, is the form of Periodic Paralysis most clearly associated with ca...
09/02/2026

Did you know?
Andersen Tawil Syndrome, also called ATS, is the form of Periodic Paralysis most clearly associated with cardiac rhythm abnormalities. However, ATS is not the only form of Periodic Paralysis that can affect your heart.

Heart rhythm changes have also been reported in other forms of Periodic Paralysis, especially when potassium becomes significantly low or high during an episode.

This does not mean everyone with Periodic Paralysis will experience an arrhythmia. It also does not mean every heart symptom is caused by Periodic Paralysis. Heart symptoms can have many causes and should always be evaluated appropriately.

Symptoms may include palpitations, a racing or slow heartbeat, skipped beats, dizziness, lightheadedness, fainting, chest discomfort, or shortness of breath.

Please do not ignore new, severe, or concerning heart related symptoms. Seek urgent medical attention for chest pain or pressure, fainting, severe shortness of breath, a sustained rapid or irregular heartbeat, or anything that feels serious or concerning.

Understanding the different forms of Periodic Paralysis can help people advocate for appropriate testing, monitoring, and care.

This is for education and community awareness only. This information is not medical advice and is not a substitute for individualized care from a qualified healthcare professional.

Did you know that muscle weakness can cause significant fatigue for people living with periodic paralysis?Weakness and f...
08/13/2026

Did you know that muscle weakness can cause significant fatigue for people living with periodic paralysis?

Weakness and fatigue are different symptoms, but they often go hand in hand.

Even when weakness is not severe or easy for others to see, the body may have less strength and endurance available.

This means that everyday activities can use up energy more quickly and leave someone feeling exhausted.

With periodic paralysis, the muscle cells may not respond normally because of the underlying ion channel problem.

During weakness, the muscle cells can become less excitable, meaning they do not respond as well to the signals that tell them to contract. When fewer muscle fibers are able to work effectively, the muscles that are still working have to do more.

This can make even everyday activities, such as standing, walking, getting dressed, preparing a meal, or simply holding yourself upright, require much more energy. That is why fatigue can feel much bigger than the weakness itself.

This fatigue is real. It isn’t laziness, it isn’t a lack of motivation, and it isn’t always something that can be solved by simply resting or pushing through.

For many people living with periodic paralysis, learning to recognize the connection between weakness and fatigue can help with pacing, planning, and giving ourselves the grace to rest when our bodies need it.

Submitted by RB, August 2026

OUR FAMILY’S HISTORY WITH ATSOur family has been dealing with ATS for three generations. This is our family’s story and ...
08/12/2026

OUR FAMILY’S HISTORY WITH ATS

Our family has been dealing with ATS for three generations. This is our family’s story and how the disease was discovered.

My mother (born in 1967) first experienced symptoms of PP at the age of nine, when the triggering factor was likely an influenza infection. The attacks then occurred at one-year intervals. Seven to ten days of paralysis, which gradually worsened until she could no longer walk, and then gradually subsided.
At the time, in Czechoslovakia, it was not possible to travel abroad or consult with foreign experts. Doctors in our country did not know how to treat such a disease. My mother spent many vacations in the hospital, both as a child and later on, but no diagnosis was ever found.
With the onset of menstruation, when she was 11 years old, the attacks became linked to her cycle (usually about a week to ten days before, and then improvement came with the onset of menstruation, though there were also attacks that lasted significantly longer).
At first, only my mother’s legs would go numb; gradually, as she aged, other muscle groups were affected—her arms, back, neck, face… Currently, her attacks are milder, but they focus more on her internal organs (heart, stomach, intestines).

My mother studied theology in college. Thanks to some professors’ contacts with the Western world, particularly with the Diakonie in Geneva, they managed to secure a so-called “Freie wissenschaftliche Bett” for her at a hospital in Würzburg in January 1989.
She was also able to travel to what was then West Germany. In Würzburg, she was diagnosed with hypoPP (with the help of a facility in Munich, where they performed a muscle biopsy).
My mother was prescribed Diclofenamide, and even after returning home, she remained in contact with Professor Ricker. She brought a year’s supply of medication with her in her suitcase, and in January 1990 she was admitted for a follow-up hospital stay, which was already much easier (thanks to the change in circumstances that allowed her to travel).
In 1996, doctors at IKEM in Prague saved my mother by implanting a pacemaker, and six months later, a defibrillator as well. After many ups and downs and various complications, my mother now has a subcutaneous defibrillator implanted and is on disability retirement.

In 2003, a request came from Ulm, Germany, to collect blood samples from all relatives on my mother’s side to learn more. The result was a confirmed gene mutation for ATS in my mother (without prior heredity) and the same mutation in me with a 50% chance of inheritance; my older sister is healthy. A series of photographs, questionnaires, and letters followed. First with Professor Ricker, and later with Professor Lehmann-Horn.

I first experienced the attacks myself when I was 11 years old (roughly a year after the diagnosis). I first felt weakness in my hands at school while taking notes; once a year, I had a very severe attack in my legs lasting about 14 days. Over the course of two years, the attacks became more frequent, but not very severe. From the age of fifteen, they became linked to my menstrual cycle, just like my mother’s. Over time, however, the attacks became stronger and lasted longer (up to 14 days).Sometimes just my legs, sometimes my arms, or just my arms. As an adult, however, there were periods when the attacks were almost invisible on the outside. In recent years, though, they’ve started affecting my internal organs more as well (heart, stomach, intestines).
On top of all that, I’ve been diagnosed with ADHD since childhood.

Until I was 15, I managed without medication. Then my mom and I both took a drug called Fenamid, which we were able to import from Italy. But they stopped manufacturing it after a few years, and we went without medication for about a month. That was tough. I could only move around well around the time of my menstrual cycle; otherwise, I was like a rag doll. Our doctor at the time prescribed Diluran, a Czech-made medication. It’s a drug for intraocular pressure that contains acetazolamide. Thanks to it, we can move around. The medication has quite a few side effects; one of them is a burning pain or even temporary loss of sensation in the soles of the feet and palms when the dose is increased during an attack.

Today, I am almost 32 years old and have two children. Both births were high-risk (I gave birth naturally to both), and I never had contractions throughout my entire abdomen—only in the lower part. My older son (born 2019) is healthy, but my younger daughter (born 2022) inherited ATS. A DNA test shortly after her birth confirmed it. About a year and three months ago, the disease manifested in her as well; she wasn’t even three years old yet. The attack was very severe; her legs became completely paralyzed, and it took three days before she was able to stand on them again with full strength. Since then, she’s needed to be watched closely. She’s very active. During hikes in rough terrain, she quickly runs out of energy. Fortunately, it doesn’t lead to complete paralysis, and so far, it’s enough for her to just rest.
We’re all under the care of geneticists, neurologists, and cardiologists (my daughter is currently just being monitored). I’m on beta-blockers (nadolol), which have been sufficient so far.
Despite all this, my mother and I try to live a full life, and I try to ensure the same for my daughter. Although I am also on disability, I still go to work, devote myself to my family and my dogs as best I can, and do everything I still have the strength for.

AL, Czech Republic (Europe)

08/11/2026

Learn about the experiences of DUVYZAT® patients and providers, focusing on ways that may help overcome challenges and the role of DUVYZAT® in their journeys.

08/02/2026

MY PARALYSIS EPISODES ARE FADING, BUT THE DISEASE ITSELF FEELS WORSE

Periodic paralysis has been one of the defining parts of my life for as long as I can remember.

Over the years I learned to recognize it, live with it, and adapt. But it hasn’t stayed the same.

For a long time my episodes were textbook. Most happened in the morning when I woke up. The pattern was familiar and, in its own way, predictable. I could usually look back and identify the triggers. Even though the attacks themselves were never easy, they had a clear shape. That made them, in some ways, easier to manage.

As I’ve gotten older, something shifted. I don’t seem to have the flaccid paralysis episodes anymore. Instead the weakness has become more persistent, severe, widespread, and disruptive. It doesn’t announce itself the way the paralysis did.

Sometimes it just settles in and stays. Along with it has come more stiffness, aching, and heaviness, not only in the muscles but in joints, tendons, and ligaments. My body feels tighter and less forgiving. Simple movement can feel harder than it should.

I don’t know how much of this is aging, how much is disease progression, or some mix of both. What I do know is that fewer paralysis attacks has not meant less impact on my life. It has meant a different kind of struggle, and in some ways a harder one.

This change has also made the condition more difficult to explain. When people hear “periodic paralysis,” they picture the dramatic attacks where the body simply stops cooperating. That was once the most visible part of my experience.

Now the weakness, stiffness, and chronic aches are the everyday reality. The recovery never feels complete.

There’s a quiet grief in that. Even though the paralysis episodes were never easy, at least they made sense. They fit the picture I’d been given. This newer version feels less straightforward, quieter from the outside, but more exhausting to live with.

People often assume fewer attacks means I’m doing better.

That hasn’t been my experience. Fewer episodes hasn’t meant fewer symptoms or fewer limitations. The disease has simply become less obvious.

I used to think that if the paralysis faded, I would be better. Instead I’ve learned that fewer attacks don’t always mean less disease. Sometimes it just means a different kind of struggle, one that’s quieter on the outside but heavier every day.

I’m not looking for sympathy. I’m hoping for better understanding of hypokalemic periodic paralysis, for those of us living with it, and for the people around us. Sharing this is one small way to help that happen.

Submitted by RB, August 1, 2026

We’re excited to share an upcoming virtual event featuring one of the leading experts in Periodic Paralysis.Dr. Stephen ...
07/30/2026

We’re excited to share an upcoming virtual event featuring one of the leading experts in Periodic Paralysis.

Dr. Stephen Cannon is a neurologist and researcher whose work has played a major role in shaping our understanding of Periodic Paralysis. His research focuses on ion channels and how changes in these channels lead to the muscle weakness and attacks experienced in this condition.

If you’ve ever read about genes like CACNA1S or SCN4A, you’ve likely come across research he helped lead.

Join us for MDA’s Spotlight On: Periodic Paralysis:
Tuesday, August 4, 2026
4:00–5:00 PM ET
The session will cover diagnosis, treatment approaches, current research, and include a live Q&A.

Presented in partnership with the Periodic Paralysis Association, MDA and Xeris Pharmaceutical

Register for free here:

- What I Wish People Understood About Periodic ParalysisI can look completely fine and still be in the middle of a perio...
07/25/2026

- What I Wish People Understood About Periodic Paralysis

I can look completely fine and still be in the middle of a periodic paralysis attack. That is one of the hardest parts of living with a rare, invisible condition: the outside does not always match what is happening inside.

Periodic paralysis is not just getting weak sometimes. It can mean suddenly losing strength, struggling to move, or feeling trapped in a body that is not responding the way it should. For people who live with it, the unpredictability can be as exhausting as the symptoms themselves.

One of the biggest misunderstandings is that if someone is walking, talking, or sitting upright, they must be fine. That assumption can make the condition harder to explain to family, friends, coworkers, and even medical professionals. Many of us learn to mask, push through, or minimize what is happening because the attacks do not always look dramatic from the outside.

Another thing people do not always understand is that periodic paralysis affects more than muscles. It can affect confidence, planning, independence, and emotional well being. When you never know when an attack might happen, simple things like going out, traveling, or making commitments can require extra thought and backup plans.

The condition also does not look the same for every person. Triggers can vary, severity can vary, and recovery can vary. What helps one person may not help another, which is why listening to the patient matters so much. People living with periodic paralysis often become experts in their own bodies long before they ever get the support they need.

What helps most is not advice from someone who has never lived it. What helps is being believed. It helps when people understand that rest, flexibility, preparation, and patience are not luxuries. They are often necessities.

If I could leave readers with one message, it would be this. Periodic paralysis may be invisible, but it is real. The more we talk about it openly, the easier it becomes for patients to be understood, respected, and supported.

Ralph Berthiaume
PPSN Director

•  Happy Father’s Day to all dads living with periodic paralysis, and to the dads who care for someone living with perio...
06/21/2026

• Happy Father’s Day to all dads living with periodic paralysis, and to the dads who care for someone living with periodic paralysis. We also honor the fathers, stepfathers, grandfathers, friends, advocates, medical providers, researchers, and all the dads who help carry the load for those living with periodic paralysis. Your strength, compassion, and support mean so much to this community.

Dads, You are seen and you are appreciated!


2026 Periodic Paralysis Conference – Register Now! 2026 Periodic Paralysis Conference on October 10–11, 2026, in Orlando...
06/07/2026

2026 Periodic Paralysis Conference – Register Now!

2026 Periodic Paralysis Conference on October 10–11, 2026, in Orlando, Florida at the Hilton Lake Buena Vista(hosted by the PPA).

This is the largest gathering of its kind for patients, families, clinicians, and researchers focused on periodic paralysis.

Two ways to participate:
• In-person attendance
• Live stream (virtual attendance!)

Registration details:
• Registration is officially open now
• Early-bird pricing available until July 1st
• Final registration deadline: August 31st

🔗 Register here:
https://periodicparalysis.org/conference-2026/

If you’ve attended past conferences, please share your experiences and thoughts!

What did you find most valuable? What would you recommend to first-timers? Any tips or highlights you’d like to pass along?

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