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A 44-year-old male asked:

What,s the main reason of insomnia in an eldery adult (75) years post surgery which caused brain hypoxia ?

1 doctor answer5 doctors weighed in
Dr. Eric Weisman
Neurology 36 years experience
Difficult to know: insomnia can occur with depression, worry, chronic pain, acute pain, congestive heart failure, caffeine or as a medication side effect. It can occur if there is reversal of the normal sleep wake cycle (taking naps in the daytime then up at night) Sometimes confusional states can lead to insomnia ( eg, urinary track infection in someone with pre-existing brain dysfunction or a degenerative state)

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Last updated Apr 23, 2020

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