Myoclonus refers to quick, lightning-like jerks (contractions) of a muscle or a group of muscles.

Myoclonus is similar to sudden muscle cramps, but muscle contractions begin and end more rapidly, lasting only moments. Myoclonus may involve only one hand, a group of muscles in the upper arm or leg, or a group of facial muscles. Hiccups are a type of myoclonus that involves only the diaphragm, the muscle that separates the chest from the abdomen. Myoclonus may also involve many muscles at the same time.

Myoclonus may occur normally, often when a person is falling asleep. Or it may result from a disorder such as liver or kidney failure. Myoclonus may also occur after cardiac arrest—when the heart's pumping stops suddenly—or after taking high doses of certain drugs such as levodopaSome Trade Names

DOPAR

LARODOPA

or bismuth. Other causes include certain types of seizure disorders (progressive myoclonic epilepsy), degenerative diseases that occur late in life (such as Alzheimer's disease), prion diseases (such as Creutzfeldt-Jakob disease), and head injuries.

If myoclonus is severe, anticonvulsants, such as clonazepamSome Trade Names

KLONOPIN

or valproateSome Trade Names

DEPARENE

(see Seizure Disorders: Drugs Used to Treat Seizures), are sometimes helpful

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Carpal tunnel syndrome is a painful compression of the median nerve as it passes through the wrist.

Carpal tunnel syndrome results from compression of the median nerve, which is located at the palm side of the wrist (an area called the carpal tunnel). The median nerve serves the thumb side of the hand. The compression results when swelling or bands of fibrous tissue form for a variety of reasons on the palm side of the wrist.

Carpal tunnel syndrome is common—especially in women—and may affect one or both hands. Particularly at risk are people whose work requires repeated forceful movements with the wrist extended, such as using a screwdriver. Another cause is use of a computer keyboard that is not positioned properly. Prolonged exposure to vibrations (for example, by using certain tools) has also been claimed to cause carpal tunnel syndrome. Pregnant women and people who have diabetes, an underactive thyroid gland, gout, or rheumatoid arthritis are at increased risk of developing carpal tunnel syndrome.

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When the sodium level in the blood falls quickly, symptoms tend to develop rapidly and be more severe. The brain is particularly sensitive to changes in the sodium level in the blood. Therefore, symptoms such as lethargy and confusion occur first. As hyponatremia becomes more severe, muscle twitching and seizures may occur; stupor, coma, and death may follow. The diagnosis of hyponatremia is made by measuring the sodium level in the blood. Determining the cause of hyponatremia is more difficult and requires a full assessment by a doctor.

Mild hyponatremia can be treated by restricting fluid intake to less than 1 quart per day. Severe hyponatremia is an emergency. To treat it, doctors slowly increase the level of sodium in the blood with drugs, intravenous fluids, or sometimes both. Increasing the level too rapidly can result in severe and often permanent brain damage.

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The partial excerpts above are from the site sources listed below respectively... I strongly suggest that you schedule an appointment to discuss this condition with your physician (who may refer you to a neurologist...)...just to be safe and sure that it will not progress due to delay of diagnosis.