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Periodic limb movement disorder (PLMD), is a condition in which a person’s legs or arms twitch, cramp or move involuntarily and periodically during sleep. Previously, PLMD was referred to as nocturnal myoclonus - rapid, rhythmic contractions of the muscles often seen in seizures. However, PLMD is not myoclonus.

Restless leg syndrome is a condition in which your legs experience an unpleasant sensation causing an irresistible urge to move them – often during sleep or when trying to fall asleep or when at rest, either lying or sitting down. By moving the legs, the uncomfortable sensation eases and goes away temporarily. Restless leg syndrome may also occur in the arms. This condition can disrupt sleep routines, most frequently during the evening or early part of the night, making it hard to fall asleep and stay asleep.

Insomnia is something that troubles many people and has a number of different causes, the most common being stress, anxiety, or too much caffeine. What ever the cause, getting too little sleep can have a serious affect on your daily life.

An iron deficiency is a condition that develops when the body does not have sufficient iron. Iron is an essential dietary mineral responsible for the transport of oxygen in the blood from the lungs to the rest of the body in the form of hemoglobin (an iron-rich protein that gives blood its red color).

Anemia is a condition which occurs when there are not enough red blood cells to carry oxygen from your lungs to all parts of the body. If you have anemia, less oxygen is delivered to the body and as a result your organs and tissues cannot function at optimal level. Very often you will feel tired, fatigued, have low energy levels and a weak immune system.

Sports injuries are a common occurrence in professional sports as well as in leisure time sporting activities. Athletes and sports enthusiasts many times endure intense training programs in order to perform at an optimal level.

A sore throat is usually due to an infection in the throat area. Sore throat causes are mostly related to cases of pharyngitis or tonsillitis. Aside from pain in the throat area, the sore throat symptoms can also include a reddish appearance or swelling in the throat, ear pain, difficulty swallowing, and a high fever.

The medical term shock refers to the organs and tissues of the body not receiving a sufficient flow of blood. As a result of the imbalance of oxygen supply and demand, a build up of waste products occurs and can cause damage to the organs. This type of shock is known as physiological shock and can result in collapse, coma or even death if it is not treated immediately.

Sterility, also referred to as infertility, is defined as an inability to conceive a child after trying to do so for at least one year. Sterility can affect both men and women, with the cause involving either one or both parties.

The liver is the second largest organ in the body, and is often seen as the most important one. In traditional Chinese medicine, for example, a healthy liver is seen as the most critical element in the body's ability to fight disease and function optimally.