Periodic Paralysis Awareness

Please be cautious of the information you get about Periodic Paralysis on social media. This was brought up at the 2023 Periodic Paralysis conference by both Dr Harr and Dr Cannon and I cannot agree more.

I know there are many social media sources and support platforms for the diseases that comprise of the Periodic Paralyses. I believe that this is a good thing for the PP community. But it’s important for social media managers to be current on the research and have connections to experts to be sure there is no inaccurate information about Periodic Paralysis on their forums. I’m sure the managers and admins all have good intentions.

You as someone living with PP or having a physician who suspects PP should always ask for scientific evidence supporting any posts, comments or information on social media, especially if it seems weird, inaccurate or contradictory.
All supporting evidence should be current and always include a link to a source, preferably from the NIH, NHS, PPA, PPI or any other governmental or university organization studying Periodic Paralysis.

This is vital for those who are seeking a diagnosis. It’s very important not to use inaccurate information when speaking with your doctors. It could make the diagnostic process more difficult.

If you are unsure of the accuracy of information on social media and are unable to access supporting evidence, please reach out to the leading PP organizations for clarification.
PPA - periodicparalysis.org
PPI - hkpp.org
PPSN - Periodic Paralysis Awareness

As people living with PP, it’s important to understand triggers and symptoms can vary from person to person even within the same family and that PP treatment and medications need to be individualized for each affected person.

Please be cautious of the information you consume on social media. Again, I’m sure everyone’s heart is in the right place, but unfortunately not everyone’s level of experience or advocacy is the same.

Everyone’s experiences should be validated. But unfortunately there can be confusion about symptoms and even triggers, especially when there is a coexisting condition.

My Life: Living with Hypokalemic Periodic Paralysis

The alarm hasn’t gone off yet, but I’m already awake. I lie still and take stock. My arms feel heavy, like they’re filled with wet sand. My legs won’t quite answer when I ask them to move. Another morning begins with the same quiet question: Will my strength come back soon enough to keep my plans, whether that’s meeting a friend for lunch, running errands, or simply leaving the house at all? I live with hypokalemic periodic paralysis, and I also have a fixed, permanent weakness that doesn’t go away. This story is about the daily episodes that ride on top of that baseline, the sudden drops in strength that can turn an ordinary day into an impossible one.

The Invisible Work of Triggers

People who don’t live with HypoPP don’t see the constant mental ledger: the carb-heavy meal last night, the stressful conversation, the cold draft in the room, the late workout, the beer with friends while watching the game. Any of these can tip potassium levels and trigger an attack. So there’s a quiet, ongoing vigilance, planning meals, pacing activity, watching the weather, bracing for stress, because the body’s chemistry can turn ordinary choices into sudden paralysis.

It’s exhausting to manage triggers you can’t always control, and it’s lonelier when others don’t understand why a slice of cake or a chilly evening isn’t just a small thing. It’s a potential day lost.

When Plans Collapse

The phone buzzes with a message: “Still on for lunch?” I want to say yes. I want to be the person who shows up. But my legs won’t hold me reliably, and the thought of standing in a crowded room while my muscles flicker in and out makes my chest tighten. I type, “I’m so sorry. I have to cancel.” The guilt arrives on cue.

To outsiders, it can look like flakiness. To me, it’s the math of a chronic illness. If I push through, I may pay for it with days of recovery. If I rest, I preserve what strength I have. Either way, the social cost is real.

The Weight of 75%

Even on “better” days, my muscles might be running at 75%. That sounds manageable until you try to carry groceries, climb stairs, or walk a block with friends. Weak muscles fatigue faster. Pain builds. Exhaustion settles in. And when strength dips lower during an episode, every movement costs more, like wading through water while everyone else is on dry land.

This is part of what makes HypoPP invisible. There’s no cast, no obvious sign. But the effort is immense, and the toll is cumulative.

The Fear of Falling

Out with family or friends, there’s a second layer of worry: What if my legs suddenly give out and I fall? It can happen without warning. One moment I’m walking, the next my legs give out and I’m down. For people who don’t know this disease, that’s hard to imagine. Legs that simply stop working, mid-step. It’s not just embarrassment. It’s safety, dignity, and the desire to be present without becoming a burden. So I scan every curb, every step, every uneven patch of sidewalk. I calculate distances and exits. I hold onto railings a little longer than I’d like.

Why “Rare” Matters

HypoPP affects roughly 1 in 100,000 people. That rarity means many clinicians have never seen a case, and many friends have never heard of it. Misdiagnoses are common. Explanations are hard to find. And because symptoms fluctuate, it’s easy for others to assume, “But you looked fine yesterday.”

Rare doesn’t mean minor. It means navigating a world that isn’t built for your reality, and often doesn’t believe it exists.

This Is My Periodic Paralysis Journey

This is my life with hypokalemic periodic paralysis. The weakness can arrive without warning. The plans can change in an instant. And still, I keep showing up for the moments I can.

Submitted by RB, September 2026

• Periodic Paralysis ia a Dynamic Disability, meaning that individuals may possess the ability to perform specific tasks at one time, but lack the capacity to complete those same tasks at another time.

Periodic Paralysis (PP) refers to a group of Channelopathies that are usually genetically inherited. They can causes sudden episodes of muscle weakness, stiffness, or paralysis. These attacks can affect the whole body or just 1 or 2 limbs.

This group of Channelopathies can cause temporary muscle weakness or paralysis. Things like exercise, stress, anxiety, certain types of food even being cold or hot are a few of the things that can trigger these episodes.

In some cases the heart and respiratory system can be affected.

The Periodic Paralyses involve defects in ion channels. These are gateways that let charged minerals (ions) such as sodium and potassium flow into and out of your cells. This flow of ions is a central part of how your muscles work. In PP, the ion channels sometimes fail, and the muscle cells don’t work correctly.

Depending on the form of PP that you have, the symptoms may be mild or severe, and they may last from minutes to days. Sometimes, the disease may slowly get worse over time and cause permanent muscle damage.

Types of Periodic Paralysis:

Hypokalemic Periodic Paralysis (HypoPP) formally known as Westphall disease.
-A rare genetic, muscle channelopathy characterized by recurrent episodic attacks of generalized muscle weakness associated with a decrease in blood potassium levels.

Hyperkalemic Periodic Paralysis (HyperPP) formally known as Gamstorp disease.
-A rare muscle disorder characterized by episodic attacks of muscle weakness associated with an increase in serum potassium concentration.

Andersen Tawil Syndrome (ATS)
-A disorder that causes episodes of muscle weakness (periodic paralysis), changes in heart rhythm (arrhythmia), and developmental abnormalities.

Paramyotonia congenita (PMC)
-A rare non-progressive genetic disorder that affects the skeletal muscles. Affected individuals experience spells of muscle stiffness or when the muscles do not relax after contraction.

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 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 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)

Hear from a Duchenne Mom 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.

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

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?