Periodic Paralysis Society of Australia

Information and support group for people with periodic paralysis and their families

Case Studies

Case Study One

I noticed the first minor symptoms (muscle stiffness in cold weather) at the age of 17. At 27 I started having episodes of extreme muscle weakness or paralysis about 6-10 times a year. this continued until at the age of 41 the episodes suddenly started to occur on a daily basis. For the next 2½ years I had approximately 20 episodes per month, often with muscle weakness in between episodes. These episodes caused total paralysis (stiff, not floppy) of the arms, legs and lead, usually with difficulty speaking and swallowing, myotonia, very shallow breathing and minor chest pain, and sometimes concentration and visual disturbances. Episodes always resolved within 2 hours leaving me feeling generally weak, especially after frequent episodes. Triggers for me include KCl2 , rest after exercise, medicines that lower Na+ levels, inhaled ether, rest after adrenaline release and rest in cold surroundings.

I had definite episodes and major weakness as a result of the KCl2 challenge but not after the glucose challenge. I was therefore diagnosed with Hyperkalemic Periodic Paralysis (or possibly Normokalemic Periodic Paralysis). I understand that this means that the muscle Na+ channels do not function properly under some circumstances. Diamox and Phenytoin both made me worse. Salbutamol brings me out of paralysis in 10 minutes, but if taken frequently it causes episodes. CaCl2 (a few drops placed under the tongue) is effective in preventing and treating episodes. Recently the birth control pill has resulted in a significant reduction in episodes and improved muscle strength (presumably by stabilizing Na+ channels). I have also been diagnosed with malignant hyperthermia and I suffer from frequent atypical migraines. I now make notes on all my drug trials and keep a detailed health log which has helped a lot.

 

 

 

Case Study Two

For as long as I can remember I have experienced periods of weakness.    These moments of weakness usually come with: 

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Rest after exercise

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Eating certain foods (e.g. pies, sausage rolls, sultana bran)

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Eating too much or not eating enough 

The weakness hasn’t always been a big problem for me but as I get older the weakness seems to get more severe.

I am fifteen years old and I am studying my first year of TEE in year eleven.  My school is three stories high and I am finding it hard to get up and down the stairs in between periods.  This has sometimes led to me being in trouble for being late to class.  I have missed many days off school because of this; recently I missed a week because I felt too weak to get out of bed.  Last year I often (once a month) went to the sick bay when feeling too sick to work.  I was almost always sent home when all I really needed was something to eat, like a sandwich, and a bit of rest.  This year when this happens I tend to just sit in class and stop work for a while until I’m feeling better.  There have been times when my friends have had to carry me up the stairs because I have felt too weak to climb the stairs myself.

One of my subjects at school is dance.  I find that doing dance helps to keep me fit and active.  Sometimes I feel sick before a dance class and if I participate, after a while the weakness seems to go away. 

 

 

 

Case Study Three

When I was twenty I fractured my femur. It took a long time to recover muscle strength. Orthopaedic Surgeon and physiotherapists accused me of being lazy. I felt I was working as hard as I could to regain muscle strength and the incident reminded me of when I had fractured a bone in my ankle at the age of five and it had taken a long time to get the strength back in my leg again and walk without the aid of crutches.

After I broke my leg for the second time I started to have short episodes of paralysis in my hands and feet in the cold weather. I went to the doctor and he told me I had Raynaud’s Syndrome. I knew that he was wrong because the circulation in my hands and feet had always been good but the visit did reassure me.

At the age of thirty-two I started to have paralysis in my hands and feet again and weakness in my thighs. It took another seven years and many diagnostic tests to get a diagnosis of Periodic Paralysis. During one admission to Emergency Department I was given intravenous potassium and the paralysis became more severe. Very quickly I was unable to talk and I found breathing difficult. My husband demanded that the IV potassium be stopped and changed to glucose.

I have tried Diamox (acetazolamide) and Chlotride (hydrochlorothiazide) with only short-term success. Now I use Daranide (dichlorphenamide) and Mexitil (mexiletine). Before treatment I was having several attacks a day lasting from 20 minutes to 2 hours and often woke paralysed. Now I usually only have one or two short attacks in the evening. I recover from the attacks by eating lollies or drinking a sweet drink. Attacks are caused by sudden loud noise, high potassium foods such as potatoes and many fruit, going without food, rest after exercise and changes in weather. My current Neurologist has told me that I most likely have Hyperkalemic Periodic Paralysis and Paramyotonia Congenita.

 

 

 

Case Study Four – Hypokalaemic Periodic Paralysis

My first episode of paralysis happened at the age of 25. It came on over minutes. It began in the arms and legs, then spread to involve my neck and back so that I could not sit up. It then proceeded to my face so that I had difficulty opening my eyes and even speaking. Soon after it involved my respiratory muscles. I found it difficult to breath and was rushed to hospital by ambulance.

One year later I had further episodes of paralysis. They came on in the same way, lasted for about four hours, and then lifted in the reverse sequence of events to how they came on. Initially they occurred every few days, but then occurred a few times each day. In between episodes I was left very weak.

Notable triggers for episodes of paralysis for me were: Exercise, Emotional stress, Sodium (salt), Orange juice, and Potatoes.

I was diagnosed with Hypokalaemic Periodic Paralysis. My management involved dietary changes, lifestyle changes and medications (Potassium and Magnesium supplements, Dichlorphenamide and Spirinolactone). I learned a lot and found much support from others with the condition through support groups such as the Periodic Paralysis Society of Australia.

I prayed and asked Jesus to heal me. He did. I have not had any problems since.

 

 

 

Case Study Five

I am a 62 year old male with Hypokalemic Periodic Paralysis. Diagnosis was when I was 12 years old, soon after onset by Doctor Gordon Hislop. I would have severe total attacks of paralysis every night which I could control with Potassium.

At age 27 I started taking dichlorphenamide (Daranide)100 mg with dramatic improvement in muscle strength and abolition of paralysis attacks. I am still on this medication 35 years later with no side effects.

From mid 40's I have experienced slow and progressive degeneration of lower limb muscles which may have been slightly helped by Clenbuterol 0.02 mg twice daily.

Adverse reaction to medication was experienced from Celestone Chonodose 1 ml with intra-articular injection. This resulted in severe a attack of paralysis that was unresponsive to potassium and caused partial respiratory muscle failure.

 

 

 

Case Study Six - Myotonia Congenita (MC)

M.C. apparently comes in two main forms which impairs the operation of muscles. However, it seems to affect people in different ways. In my case, I can use my muscles, say in running with no ill affects but as soon as I try to jump a small obstacle my leg muscles lock up and I fall down. If I grip something tightly, my hands lock up and it takes a while for the muscles to relax. Its painful, embarrassing and sometimes dangerous. Dangerous if you suddenly try to get out of harms way and you have a lock up.

As a child of Primary School age, I could run like the wind, climb large trees and swim very well. I lead a pretty wild sort of life both in and out of school. It wasn't until High School, when I was told by teachers with my energy and speed I could represent the school in athletics. I tried out in some running events but as I tried to power off the starting blocks, I fell down 4 out of 5 times. The teachers and doctors concluded that the problem was either lack of muscle tone (fitness), growing pains or pretence (trying to get out of performing). Then one time I volunteered to chop wood and maintain the fires at a church camp in York (WA). It was cold and damp most of the the time so I had to cut lots of wood. After using the axe for a little while, I found I could not let go of the handle and my arms ached like I had severe cramps. Fortunately, there was a doctor at this camp who referred me to a Neurologist. After enduring the pain of an E.M.G. diagnosed the above muscle disease. Dylantin was prescribed and I have managed with this and a moderate lifestyle. The one positive aspect of this problem I discovered was when I grabbed one of my children to discipline them, they could not get away because I could not let go. Sometimes they would say, not the grab Dad! My response was, you better come here then. There doesn't seem to be a cure for this problem but there are ways to keep it manageable. I have also found that the support group P.P.S.A. encouraging and helpful too.

 

 

 

You can find more information about Periodic Paralysis at

The Periodic Paralysis News Desk

Periodic Paralysis Association

Parálisis Periódicas en ESPAÑOL (in Spanish)

 
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Hypokalemic Periodic Paralysis

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Thyrotoxic Periodic Paralysis

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Hyperkalemic Periodic Paralysis

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Normokalemic Periodic Paralysis

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Andersen's Syndrome

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Paramyotonia Congenita

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Potassium Aggravated Myotonia

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Myotonia Congenita

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Malignant Hyperthermia


DISCLAIMER: Please note that we are not a professional organisation so please view all information on this website as informal sharing. Every effort has been made to provide accurate and up-to date information.