How are narcolepsy and cataplexy treated? The test measures how long it takes to fall asleep and whether a person falls into a deep sleep straight away. As part of the test, the person is asked to take four or five short naps about 2 hours apart. A multiple sleep latency test (MSLT) is performed during the day.It is used to see if there are abnormalities in the sleep cycle. A polysomnogram is an overnight test that takes continuous measurements while the person is asleep.The sleep specialist will most likely perform a sleep study (called a polysomnogram) and a multiple sleep latency test (MSLT). If a doctor thinks someone has a sleep disorder they will usually refer them to a sleep specialist for tests. When cataplexy is not present, a doctor may have to rule out other causes of daytime sleepiness before they can diagnose narcolepsy. Alcohol, nicotine, caffeine and some medicines can also lead to excessive daytime sleepiness. Excessive daytime sleepiness can also occur because of other medical conditions such as infections, mood disorders such as depression, chronic illnesses such as anaemia and congestive heart failure, and other sleep disorders such as sleep apnoea. Narcolepsy can sometimes be difficult to diagnose. How are narcolepsy and cataplexy diagnosed? However, about 10% of people experience cataplexy as the first symptom. Typically, a person with narcolepsy will have excessive daytime sleepiness as the first symptom and develop cataplexy several weeks or months later. It affects both males and female equally. Narcolepsy and cataplexy usually begin in young people aged in their teens or early twenties, but can develop in later life. Narcolepsy is thought to affect about 1 person in every 2,000 in Australia. Sleep paralysis can also affect people who do not have narcolepsy. A person with sleep paralysis may feel frightened because they can’t move, but it is not harmful and does not cause permanent paralysis. Sleep paralysis – when a person can’t move their muscles or speak when waking up or falling asleep – may only last anywhere from a few moments to a few minutes. Cataplexy is the second most common symptom of narcolepsy (after excessive daytime sleepiness) and is thought to affect about 70% of people with narcolepsy. It can occur spontaneously, but many people notice that it is triggered by sudden emotions, such as laughter, excitement fear or, anger. Cataplexy can last for several seconds or minutes. No matter how severe the loss of muscle function is, the person remains fully conscious throughout the episode. For this reason narcolepsy can be dangerous.Ĭataplexy – a sudden loss of muscle function while conscious – can range from a brief sensation of weakness in certain areas of the body to a total collapse where all the muscles are affected, causing a person to fall down. working, playing a game, walking, talking to someone, eating, driving or operating machinery. People can fall asleep doing absolutely anything, e.g. Narcolepsy may also affect a person’s ability to perform normal daily activities.
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