Insomnia is itself often a symptom of other problems.
Typical patterns of insomnia include the inability to fall
asleep or stay asleep at night, waking up earlier than usual,
and daytime fatigue. Most people with insomnia don't fall
asleep in inappropriate situations, like driving. If this does
occur, it may signal that a medical disorder (such as sleep
apnea) is the cause of insomnia.
Sleep Apnea
Excessive daytime sleepiness is the primary symptom. Some
people will deny sleepiness but feel fatigued. Other symptoms
are snoring, snorting, and gasping sounds when you sleep --
often first noticed by a sleeping partner. Restless or
unrefreshing sleep is also typical, as are headaches in the
morning.
Narcolepsy
Excessive sleepiness during the day, alleviated by naps, is
a symptom of narcolepsy. Dreaming during naps and experiencing
dream-like hallucinations as you fall asleep are also warning
signs. Loss of muscle control (called cataplexy) that occurs
with emotion, such as laughing or anger, and the inability to
move as you're going to sleep or waking up (called sleep
paralysis) are also symptoms.
Restless Leg Syndrome
The primary warning sign is the irresistible urge to move
your legs shortly after you get into bed, in the middle of the
night after awakening, or even when wide awake during the day.
It usually feels better if you get up to walk around or rub
your leg. "Creepy-crawly" or twitching feeling in your calves,
feet, thighs, or arms are symptoms of restless leg syndrome --
the sensations of discomfort can be quite varied. Kicking or
twitching leg movements during sleep, and sometimes while
awake, may be warning signs.
Call Your Doctor If:
Your sleep does not improve with self-help techniques, such as
establishing good sleep hygiene, cutting down on caffeine,
exercising, and using relaxation techniques.
You think your sleep problems may be related to an underlying
condition, such as depression or heart failure.
You snore loudly or make snorting or gasping noises while you
sleep -- or your partner observes these things while you're
asleep.
You fall asleep doing normal activities, such as talking or
driving.
You regularly feel unrefreshed on awakening and are
constantly fatigued. Sleep disorders are among the many
possible causes for fatigue.
You suspect your medication is causing your sleep problems.
SOURCES:American Academy of Family Physicians. WebMD
Medical News: "Trouble Sleep? It Could Be a Warning Sign of
Depression In Older People." American Academy of Child and
Adolescent Psychiatry. Lucile Packard Children's Health
Services. Medline Plus: "Narcolepsy." Agency for Healthcare
Research and Quality.