Sleep isn’t something that comes easy to many people, but some people find it helpful to know exactly what it is they’re suffering from. With the help of the American Academy of Sleep Medicine, Health has compiled a list of 13 classifications of insomnia. This slideshow provides symptoms, reasons, and statistics about sleep disorders that may help you. Among the list are common insomnia, adjustment insomnia, behavioral insomnia, or insomnia due to drug or substance abuse. Health interviewed sleep professionals, many of whom reiterate the sentiment that those who suffer from sleep problems are not alone, and to always seek help if you feel as though you need it.

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