4. Mental Disorders
Mental disorders are a common category of conditions that frequently cause insomnia.
Anxiety and depression are top offenders, as they put you in a state of hyper-arousal, also known as fight or flight.
This can cause you to worry irrationally about how little sleep you are getting, in turn keeping you from falling asleep.
Even if the medical condition you have does not cause insomnia, the medication you are using to treat it might.
Common medications that cause insomnia include alpha-blockers, beta-blockers, corticosteroids, SSRI antidepressants, ACE inhibitors, angiotensin II-receptor blockers, cholinesterase inhibitors, non-sedating antihistamines, glucosamine and chondroitin, and statins.
If you are taking any of these medications and are experiencing insomnia, talk to your doctor about potential solutions. He or she may switch you to a different type of medication or work with you to find solutions to treat the insomnia as a symptom.