![]() ![]() A person having such an attack is fully awake and knows what is happening. Cataplexy may be mild (such as a brief feeling of weakness in the knees) or it may cause complete physical collapse, resulting in a fall. ![]() Attacks of cataplexy are sudden, brief losses of muscle control. CataplexyĬataplexy is sometimes the first symptom of narcolepsy, but usually it develops several years after EDS. People with narcolepsy may also have a "sleep attack" at a very unusual and sometimes dangerous time (while in the middle of a conversation or driving a car). They tend to fall asleep not only in situations in which many normal people feel sleepy (after meals or during a dull lecture), but also when most people would remain awake (while watching a movie or writing a letter). People with narcolepsy often report feeling easily tired or tired all the time. Excessive daytime sleepiness (EDS)ĮDS is usually the first symptom of narcolepsy. In some cases, excessive daytime sleepiness is the only symptom. The four most common symptoms are: excessive daytime sleepiness, cataplexy, sleep paralysis and hypnagogic hallucinations. Narcolepsy symptoms can appear all at once or they can develop slowly over many years. Some researchers have suggested that a set of genes combines with additional unknown factors in a person's life to cause narcolepsy. Narcolepsy often runs in families, but many people with narcolepsy do not have relatives who are affected. ![]() Narcolepsy is not caused by psychiatric or psychological problems. In narcolepsy the lack of muscle tone and the dream experiences occur at inappropriate times. Cataplexy, sleep paralysis, and hypnagogic hallucinations are similar to the loss of muscle tone that accompanies normal dreaming in a stage of sleep called REM. However, narcolepsy appears to be a disorder of the part of the central nervous system that controls sleep and wakefulness. What causes narcolepsy? Although narcolepsy has been thoroughly studied, the exact cause is not known. Although no "cure" for narcolepsy has been found, most children with narcolepsy can lead nearly normal lives if properly treated. While narcolepsy is relatively uncommon, its impact on a child's life can be dramatic and, if not recognized, disabling. Narcolepsy is a sleep disorder that causes symptoms such as excessive daytime sleepiness and, in some cases, "sleep attacks." These "attacks" cause people with narcolepsy to fall asleep at very unusual and sometimes dangerous times (while in the middle of a conversation or driving a car). ![]()
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