Some common types of sleep disorders include insomnia in which you have difficulty falling asleep or staying asleep throughout the night sleep apnea in which you experience abnormal patterns in breathing while you are asleep there are several types of sleep apnea. Sleep disorders are conditions that prevent a person from getting restful sleep and as a result can cause daytime sleepiness and dysfunction there are approximately eighty different types of sleep disorders about 70 million americans suffer from them the most important sleep disorders are. There are many conditions diseases and disorders that can cause sleep disturbances in many cases sleep disorders develop as a result of an underlying health problem allergies and respiratory. Phases of a sleep disorders clinical trial clinical trials for sleep disorders are generally divided into four phases phase i clinical trials involve giving a new treatment to a small number of
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