What is Insomnia?

Insomnia is characterized by an inability to sleep and/or to remain asleep for a reasonable period. Insomniacs typically complain of being unable to close their eyes or "rest their mind" for more than a few minutes at a time. Insomnia is a symptom, though a common misconception is that it is itself a sleep disorder. Insomnia is most often caused by sleep disorders, but other causes include fear, stress, anxiety, medications, herbs and caffeine. An overactive mind or physical pain may also be a cause. Finding the underlying cause of insomnia is usually necessary to cure it.

Common causes...

• Sleep apnea is a condition that occurs when a sleeping person's breathing is interrupted, thus interrupting the normal sleep cycle. With the obstructive form of the condition, some part of the sleeper's respiratory tract loses muscle tone and partially collapses. People with obstructive sleep apnea often do not remember any of this, but they complain of excessive sleepiness during the day. Central sleep apnea interrupts the normal breathing stimulus of the central nervous system, and the individual must actually wake up to resume breathing. This form of apnea is often related to a cerebral vascular condition, congestive heart failure, and premature aging.
• Jet Lag is seen in people that travel through multiple time zones on a regular basis, as the time relative to the rising and falling of the sun no longer coincides with the body's internal concept of it, and is also seen in people who consistently work night shifts. See also: circadian rhythm.
• Parasomnia includes a number of disorders of arousal or disruptive sleep events including nightmares, sleepwalking, violent behavior while sleeping, and REM behavior disorder, in which a person moves his/her physical body in response to events within his/her dreams. These conditions can often be treated successfully through medical intervention or through the use of a sleep specialist.
• Gastroesophageal Reflux Disease causes repeated awakenings during the night due to unpleasant sensations resulting from stomach acid flowing upward into the throat while asleep.
• Mania or Hypomania in bipolar disorder can cause difficulty falling asleep. A person going through a manic or hypomanic episode may feel a reduced need for sleep. Sleep deprivation can worsen a manic episode, or cause hypomania to develop into mania.

What is Restless Leg Syndrome?

Restless leg syndrome is a common cause of painful legs. The leg pain of restless leg syndrome typically eases with motion of the legs and becomes more noticeable at rest. Restless leg syndrome also features worsening of symptoms during the early evening or later at night. The characteristic nighttime worsening of symptoms in persons with restless legs syndrome frequency leads to insomnia. Restless leg syndrome usually begins slowly. Over time, the legs become more affected. Less frequently, restless leg syndrome can affect the arms.

Common causes...

The cause of restless leg syndrome is unknown in most patients. However, restless leg syndrome has been associated with pregnancy, obesity, smoking, iron deficiency and anemia, nerve disease, polyneuropathy (which can be associated with hypothyroidism, heavy metal toxicity, toxins, and many other conditions), other hormone disease, such as diabetes, and kidney failure (which can be associated with vitamin and mineral deficiency). Some drugs and medications have been associated with restless leg syndrome including caffeine, alcohol, H2-histamine blockers (such as Zantac and Tagamet) and certain antidepressants (such as Elavil). Occasionally, restless legs run in families. Recent studies have shown that restless leg syndrome appears to become more common with age.