Stiff Person Syndrome/Moersch-Woltmann Syndrome/ Isaacs Syndrome - Medtick

Stiff Person Syndrome/Moersch-Woltmann Syndrome/ Isaacs Syndrome

What is it?

An autoimmune disease where one has increased muscle stiffness and usually affects persons between 30-60 years of age.

  • It  has been reported to occur in children and older adults as well.
  • It affects females more than males

For more detail please read:

Stiff person syndrome (NORD)


Isaacs’ syndrome

  • Isaacs’ syndrome is deemed as an autoimmune neuromyotonia disorder which causes persistent muscle fiber contraction characterized by muscle stiffness at rest and impaired muscle relaxation after voluntary contraction.
  • It affects persons at any age (usually over 40 years old) and symptoms varies significantly in severity.

Cause

  • Unknown
  • Autoimmune disease – when the immune system mistakenly attacks certain nerve cells (neurons) that produce glutamic acid decarboxylase (GAD) leading to a deficiency of GABA in the body. GABA helps control muscle movement and prevent hyperexcitability within the brain and spine.
  • The immune system attacks the protein to amphiphysin, a protein involved in the transmission of signals from one nerve cell to another.

Isaacs syndrome 

  • Our body own immune/defence system attacks our nerves and muscles by producing antibodies that prevent the release of potassium  in our nerves endings and this can disrupts the nerve signals between the nerves and muscles.
  • Tumour

Symptoms

  • Aching, painful muscles, muscle cramps/spasms/stiffness?
  • Muscle stiffness in the trunk and limbs that comes and goes—this causes back stiffness or pain, an exaggerated upright posture, and stiff-legged walk?
  • Severe muscle spasms in the arms and legs when the person is startled, touched, upset, or anxious?
  • Curved lower back (lordosis) and deformed joints in the body?
  • Falling during sudden muscle spasms?

Isaacs syndrome

  • Slow muscle relaxation after voluntary contraction, such as handgrip, eye and jaw closure (pseudomyotonia)?
  • Muscle stiffness and muscle cramps worsen by voluntary muscle movement?
  • Muscle twitches of eyes and/or face , arms and/or legs (can be single and/or many)?
  • Painful muscle cramps?
  • Aching, painful muscles, muscle cramps/spasms/stiffness?
  • Sweating?
  • Increased saliva production?
  • Heart palpitations?
  • Flush face?
  • Abdominal pain?

Complications /Information to beware of/General tips:

Do not wait, phone an ambulance if have or develop:


This condition can lead to:


This condition may show similar symptoms to:

Please talk to your healthcare professional (i.e. Medical Doctor/Pharmacist) for further advice

Detailed Information

Please copy and paste any key words from the title: Stiff Person Syndrome/Moersch-Woltmann Syndrome/ Isaacs Syndrome in the following respective 'Medtick References and/or Sources' to find out more about the disease (this also may include diagnosis tests and generic medical treatments).

  • NHS

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  • Medscape

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  • Pharmaceutical Journal

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  • Cleveland Clinic

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  • Drugs.com

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  • National Organisation of Rare Diseases

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  • Verywell Health

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  • DR Axe

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