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Hypokalemic Periodic Paralysis

Episodes of muscle weakness due to low potassium.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Nöroloji department. Book Appointment →

What is Hypokalemic Periodic Paralysis?

Hypokalemic periodic paralysis is a rare muscle disease characterized by episodes of muscle weakness occurring during a drop in blood potassium level. It has hereditary (genetic) and acquired (such as thyrotoxic) types.

Episodes are often triggered by carbohydrate-rich meals, rest after heavy exercise, stress, or cold. Weakness usually starts in the legs and spreads; respiratory and swallowing muscles are rarely affected.

Diagnosis is made with detection of low potassium during an attack, genetic tests, and exclusion studies. Treatment includes both potassium replacement during attacks and preventive measures.

Symptoms

Episodes of proximal muscle weakness
Waking from sleep with weakness
Loss of reflexes during attacks
Weakness lasting hours
Triggering after exercise and carbohydrates
Risk of cardiac arrhythmia
Normal intelligence and consciousness

Risk Factors

Family history
CACNA1S, SCN4A gene mutations
Thyrotoxicosis (especially in men of Asian descent)
Carbohydrate-rich diet
Heavy exercise
Stress and cold
Some medications (corticosteroids, diuretics)

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • If recurrent transient attacks of weakness are present
  • If signs of arrhythmia appear during an attack
  • If respiratory or swallowing difficulty develops
  • If there is a similar family history
  • If episodes of weakness occur together with hyperthyroidism

Treatment Methods

01
Oral or intravenous potassium replacement during attacks
02
Avoidance of triggers
03
Preventive medications such as acetazolamide
04
Low-carbohydrate diet
05
Treatment of thyrotoxicosis if present
06
Cardiology follow-up and family screening

Which Department to Visit?

You can visit our Nöroloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.