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Myoclonus: Introduction

Everyone has muscle twitches, such as hiccups or sleep starts, but clinical myoclonus is more severe. ...more »

Symptoms of Myoclonus

Treatments for Myoclonus

Home Diagnostic Testing

Home medical testing related to Myoclonus:

Wrongly Diagnosed with Myoclonus?

Myoclonus: Related Patient Stories

Myoclonus: Deaths

Read more about Deaths and Myoclonus.

Types of Myoclonus

  • Positive myoclonus - sudden muscle contractions
  • Negative myoclonus - sudden muscle relaxations
  • Posthypoxic myoclonus - from hypoxia
  • Action myoclonus
  • Cortical reflex myoclonus - probably a type of epilepsy
  • more types...»

Myoclonus: Complications

Review possible medical complications related to Myoclonus:

Causes of Myoclonus

More information about causes of Myoclonus:

Disease Topics Related To Myoclonus

Research the causes of these diseases that are similar to, or related to, Myoclonus:

Myoclonus: Undiagnosed Conditions

Commonly undiagnosed diseases in related medical categories:

Misdiagnosis and Myoclonus

Epilepsy misdiagnosed as schizophrenia: The book "Preventing Misdiagnosis of Women" reports on a case of a woman diagnosed with schizophrenia, more »

Undiagnosed stroke leads to misdiagnosed aphasia: BBC News UK reported on a man who had been institutionalized and treated for mental illness because he suffered from more »

Dementia may be a drug interaction: A common scenario in aged care is for a patient to show mental decline to dementia. Whereas this can, of course, occur due to various medical conditions, such as a more »

RLS sleep disorder causing night-time leg sensations often misdiagnosed: A common but relatively unknown sleep-related disorder called Restless Leg Syndrome (RLS) is often misdiagnosed. The typical symptoms are more »

Mild traumatic brain injury often remains undiagnosed: Although the symptoms of severe brain injury are hard to miss, it is less clear for milder injuries, or even those causing a mild concussion diagnosis. The condition goes by the name of more »

MTBI misdiagnosed as balance problem: When a person has symptoms such as vertigo or dizziness, a diagnosis of brain injury may go overlooked. This is particularly true of more »

Brain pressure condition often misdiagnosed as dementia: A condition that results from an excessive pressure of CSF within the brain is often misdiagnosed. It may be misdiagnosed as Parkinson' more »

Post-concussive brain injury often misdiagnosed: A study found that soldiers who had suffered a concussive injury in battle often were misdiagnosed on their return. A variety of symptoms can occur in more »

Children with migraine often misdiagnosed: A migraine often fails to be correctly diagnosed in pediatric patients. These patients are not the typical migraine sufferers, but migraines can also occur in children. See misdiagnosis of more »

Vitamin B12 deficiency under-diagnosed: The condition of Vitamin B12 deficiency is a possible misdiagnosis of various conditions, such as multiple sclerosis (see symptoms of multiple sclerosis). See symptoms of Vitamin more »

Myoclonus: Research Doctors & Specialists

Research related physicians and medical specialists:

Other doctor, physician and specialist research services:

Myoclonus: Rare Types

Rare types of diseases and disorders in related medical categories:

Myoclonus: Animations

Prognosis for Myoclonus

Prognosis for Myoclonus: Although myoclonus is not a life-threatening condition, it may result in serious, debilitating impairments. (Source: excerpt from NINDS Myoclonus Information Page: NINDS)

Research about Myoclonus

Visit our research pages for current research about Myoclonus treatments.

Clinical Trials for Myoclonus

The US based website lists information on both federally and privately supported clinical trials using human volunteers.

Some of the clinical trials listed on for Myoclonus include:

Statistics for Myoclonus

Myoclonus: Broader Related Topics

Myoclonus Message Boards

Related forums and medical stories:

User Interactive Forums

Read about other experiences, ask a question about Myoclonus, or answer someone else's question, on our message boards:

Article Excerpts about Myoclonus

NINDS Myoclonus Information Page: NINDS (Excerpt)

Myoclonus is a term that refers to brief, involuntary twitching of a muscle or a group of muscles. It describes a symptom and, generally, is not a diagnosis of a disease. (Source: excerpt from NINDS Myoclonus Information Page: NINDS)

Myoclonus Fact Sheet: NINDS (Excerpt)

Myoclonus describes a symptom and generally is not a diagnosis of a disease. It refers to sudden, involuntary jerking of a muscle or group of muscles. Myoclonic twitches or jerks usually are caused by sudden muscle contractions, called positive myoclonus, or by muscle relaxation, called negative myoclonus. Myoclonic jerks may occur alone or in sequence, in a pattern or without pattern. They may occur infrequently or many times each minute. Myoclonus sometimes occurs in response to an external event or when a person attempts to make a movement. The twitching cannot be controlled by the person experiencing it. (Source: excerpt from Myoclonus Fact Sheet: NINDS)

Definitions of Myoclonus:

Involuntary shock-like contractions, irregular in rhythm and amplitude, followed by relaxation, of a muscle or a group of muscles. This condition may be a feature of some CENTRAL NERVOUS SYSTEMS DISEASES (e.g., EPILEPSY, MYOCLONIC). Nocturnal myoclonus may represent a normal physiologic event or occur as the principal feature of the NOCTURNAL MYOCLONUS SYNDROME. (From Adams et al., Principles of Neurology, 6th ed, pp102-3). - (Source - Diseases Database)

A clonic spasm of a muscle or muscle group - (Source - WordNet 2.1)

Myoclonus is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Myoclonus, or a subtype of Myoclonus, affects less than 200,000 people in the US population.
Source - National Institutes of Health (NIH)


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