CONSULTANTS IN NEUROLOGY WILLIAM M. LEUCHTER, M.D., P.C. Bradley Rowens, medical director of the Sleep Center of Sinai Hos- pital. A normal loss of sleep, — over an exam at school, an argu- ment with a friend — lasts a few days and will disappear on its own. Anything longer, however, would indicate chronic insomnia, probably the result of: • Periodic limb movement dis- order, the repeated jerking of the leg during sleep, causing a person to either jolt awake or suffer frag- mented sleep. • Restless leg syndrome (RLS), a tingling, twitchy feeling in the legs and calf muscles while sitting or lying down. The sensation is of- ten described as feeling like bugs are crawling up the legs. The rest- less feeling will compel the person to stamp or walk the feeling out — all night long. Approximately 15 percent of sleep disorders are caused by ei- ther RLMD or RLS, according to the ASDC National Case Series. For both RLMD and RLS, the cause may be a chemical imbal- ance in the brain. The treatment is regular exercise, massage and cold compresses, or some pre- scription drugs. • Sleep apnea is snoring and stopping breathing in one's sleep. Usually, airway muscles tem- porarily collapse, preventing breathing for 10 seconds or longer, up to 60 times an hour, rendering the disorder potentially lethal. Pa- tients complain of daytime drowsi- ness and, Dr. Rowens says, "[they] think they have insomnia, but ac- tually their snoring is waking them up." The treatment is continuous positive airway pressure (CPAP), a nose mask worn during sleep that pushes a constant flow of air through the nose. • Depression or other psycho- logical disorders, such as anxiety, can cause a patient to either not sleep, or to sleep often during the day, resulting in the inability to sleep at night. Howard Bayer, a licensed psychologist at Birming- ham's Center for Contemporary Psychology, adds that patients suf- fering from seasonal affective dis- order, or seasonal pattern, are more prone to sleeping too much, rather than not enough, and that this affect, again, is a symptom of depression. Poor eating habits complicate sleep patterns as well, says Bev- erly Price, a registered dietician and exercise physiologist at Farm- ington Hills' Living Better Sen- sibly. Basic nutritional sense can alleviate insomnia, she says. "Before going to bed, eat things with high complex carbohydrates, such as whole-grain products like a bagel, dry cereal or oatmeal with cinnamon, if you want something sweet," Ms. Price explains. 'These produce serotonin, which causes you to relax and feel drowsy. If you eat real sugary things at night, you'll wake up in the morning feel- ing groggy." Relaxation techniques — stretching, meditation or sleep glasses and tapes — are helpful, too, she says. "Alpha and beta waves are brain waves that we produce. The alpha waves are our relaxation waves that help us un- wind. There are products that as- sist [the alpha waves], such as relaxation glasses and tapes." Light and timing also can affect sleep, says Dr. Rowen. Circadi- an rhythm is the body's internal clock, which is often affected by sunlight or jet lag. The body will eventually catch up on its own. All of these possible causes of chronic insomnia, with the ex- ception of depression, could be di- agnosed by an overnight sleep study (polysomnograph). The pa- tient would sleep overnight in a private room, while the electri- cal activity of the brain, eye and leg movement and breathing pat- terns are recorded. Often, what begins as acute can snowball into chronic insomnia, says Dr. Rowens. "Say [a patient] has gotten into a car accident." It is a traumatic incident that would naturally shake a person up, and affect his sleep. This is called short-term insomnia. To relieve it, he will maybe take a drink at night, lay in bed staring at the clock, or keep the TV on while in bed. "At the end of six months, the patient will have chronic insom- nia. But it is no longer a result of the car accident. The patient has now developed bad habits." He then needs to practice be- havioral modification — essen- tially train himself to get out of these habits. Dr. Sangal recom- mends, first of all, to use the bed only for sleep and sex: Don't watch TV or read in bed, write or do work. If this doesn't help, he may prescribe medications. Next time you really want to treat yourself to a good night's sleep, before cuddling into your flannel sheets, eliminate the co- coa (caffeine), skip the book (or read elsewhere) and snack on half a bagel with a bit of strawberry preserves. Your body will thank you. ❑ ANTHONY EWER, D.O. LAWRENCE EILENDER, Ivi.D. WILLIAM LEUCHTER, M.D. DANNY WATSON, M.D., PH.D. 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