Parasomnias are undesirable physical
activities that occur during sleep involving skeletal muscle activity,
nervous system changes, or both. Night terrors and
sleepwalking are two types of parasomnias. Sleep can be hard for people
who experience parasomnias. While "asleep," a person with parasomnia may walk,
scream, rearrange furniture, eat odd foods, or pick up a weapon.
Parasomnia can cause odd, distressing, and sometimes dangerous nighttime
activities. These disorders have medically explainable causes and usually are
Restless legs syndrome (RLS)
is a condition that produces an intense feeling of discomfort, aching, or
twitching deep inside the legs. Jerking movements may affect the toes, ankles,
knees, and hips. Moving the legs or walking around usually relieves the
discomfort for a short time.
The exact cause of restless legs
syndrome is not known. The symptoms of restless legs syndrome most often occur
while a person is asleep or is trying to fall asleep. The twitching or jerking
leg movements may wake the person up, causing insomnia, unrestful sleep, and
When a sleep problem or lack of time keeps you from
getting a good night's sleep,
excessive daytime sleepiness may occur. While almost
everyone experiences daytime sleepiness from time to time, it can have serious
consequences such as motor vehicle accidents, poor work or school performance,
and work-related accidents.
Sleep problems may be a symptom of a
medical or mental health problem. It is important to consider whether a medical
or mental health problem is causing you to sleep poorly. Treating a long-term
sleep problem without looking for the cause may hide the real reason for your
Check your symptoms to decide if and
when you should see a doctor.