Insomnia

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Insomnia, also known as sleeplessness, is a sleep disorder in which people have trouble sleeping.wikipedia
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Medication

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Modafinil

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Nasal septum deviation

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Restless legs syndrome

restless leg syndromerestless legsrestless legs syndrome (RLS)
Conditions that can result in insomnia include psychological stress, chronic pain, heart failure, hyperthyroidism, heartburn, restless leg syndrome, menopause, certain medications, and drugs such as caffeine, nicotine, and alcohol.

Pain

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Opioid medications such as hydrocodone, oxycodone, and morphine are used for insomnia that is associated with pain due to their analgesic properties and hypnotic effects.

Fear

Psychological stress

stressstressfulmental stress
Conditions that can result in insomnia include psychological stress, chronic pain, heart failure, hyperthyroidism, heartburn, restless leg syndrome, menopause, certain medications, and drugs such as caffeine, nicotine, and alcohol.

Posttraumatic stress disorder

post-traumatic stress disorderPTSDpost traumatic stress disorder

Schizophrenia

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Disease

Rheumatoid arthritis

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