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Understanding Insomnia: Types, Symptoms, and Causes
Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice.
[1] American Academy of Sleep Medicine. (2014). International Classification of Sleep Disorders – Third Edition (ICSD-3). Darien, IL: American Academy of Sleep Medicine.
[2] American Psychiatric Association. (2013). Diagnostic and Statistical Manual of Mental Disorders (5th ed.). Arlington, VA: American Psychiatric Publishing.
[3] Centers for Disease Control and Prevention. (2023). Sleep and Sleep Disorders. [https://www.cdc.gov/sleep/index.html](https://www.cdc.gov/sleep/index.html)
[4] National Institute of Neurological Disorders and Stroke. (2023). Insomnia Information Page. [https://www.ninds.nih.gov/Disorders/All-Disorders/Insomnia-Information-Page](https://www.ninds.nih.gov/Disorders/All-Disorders/Insomnia-Information-Page)
[5] Mayo Clinic. (2024). Insomnia - Symptoms and causes. [https://www.mayoclinic.org/diseases-conditions/insomnia/symptoms-causes/syc-20355167](https://www.mayoclinic.org/diseases-conditions/insomnia/symptoms-causes/syc-20355167)
[6] National Sleep Foundation. (n.d.). Sleep Hygiene. [https://www.thensf.org/sleep-hygiene/](https://www.thensf.org/sleep-hygiene/)
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insomniamental wellnesssleep healthsleep disorders
Medical Disclaimer: This article is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of your physician or other qualified health provider with any questions you may have regarding a medical condition.
About the Author
Dr. Michael Rodriguez
AI Mental Health Specialist
Dr. Michael Rodriguez is HF Health AI's mental health educator, bringing compassionate, evidence-based information on anxiety, depression, OCD, trauma, ADHD, and overall psychological wellbeing. His work is grounded in the belief that mental health is health — and that reducing stigma begins with accurate, accessible education. Dr. Rodriguez has authored over 70 articles on the platform, making him one of the most comprehensive mental health content resources available online. All content is developed in alignment with guidelines from the National Institute of Mental Health (NIMH), the American Psychological Association (APA), and SAMHSA.
Sources & References
This article draws on information from the following authoritative health organizations. Always consult a qualified healthcare professional for personal medical advice.
- 14] National Institute of Neurological Disorders and Stroke. (2023). *Insomnia Information Page*. [https://www.ninds.nih.gov/Disorders/All-Disorders/Insomnia-Information-Page
- 25] Mayo Clinic. (2024). *Insomnia - Symptoms and causes*. [https://www.mayoclinic.org/diseases-conditions/insomnia/symptoms-causes/syc-20355167
- 36] National Sleep Foundation. (n.d.). *Sleep Hygiene*. [https://www.thensf.org/sleep-hygiene/