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  1. Insomnia - Symptoms and causes - Mayo Clinic

    Jan 16, 2024 · Insomnia may be the main problem or it may be related to other conditions. Long-term insomnia is usually due to stress, life events or habits that disrupt sleep.

  2. Insomnia: What It Is, Causes, Symptoms & Treatment

    Insomnia is when you don’t get enough quality sleep, affecting how you feel and function during waking hours. It’s usually not dangerous and is typically treatable.

  3. 13 Medical Conditions That Cause Insomnia - WebMD

    Jun 19, 2025 · Find out what medical issues can cause problems falling or staying asleep -- even when you want to -- and what you can try to do about insomnia.

  4. What Causes Insomnia? - Sleep Foundation

    Jul 10, 2025 · Common causes of insomnia include stress, an irregular sleep schedule, poor sleeping habits, mental health disorders, physical illnesses and pain, medications, neurological problems, and …

  5. What Causes Insomnia | Sleep Medicine - Harvard University

    Oct 1, 2021 · It is well-known that insomnia often occurs in the setting of various social stressors (e.g., personal loss, social disruption), mental and physical health problems (e.g., heart disease, …

  6. Insomnia: Symptoms, Causes, Diagnosis, and Treatment

    Sep 3, 2025 · Insomnia is a common condition that can lead to significant impairment in one's quality of life and daily functioning, as well as an increased risk of chronic health conditions. Identifying and …

  7. Insomnia Causes: Anxiety, Stress, and Caffeine - Healthline

    Jul 11, 2025 · Insomnia may be caused by worries, school or work stress, or family issues that keep your mind active at night. Stimulants like caffeine and nicotine can interfere with sleep. Alcohol can …

  8. What causes insomnia and how can I fix it right now?

    Jul 9, 2025 · Most insomnia starts with one of four triggers—stress, poor sleep habits, medical conditions, or medications.

  9. Insomnia - Johns Hopkins Medicine

    Insomnia means having trouble sleeping at night, staying asleep, or both. It's one of the most common sleep disorders. Episodes of insomnia that last a few days at a time are called short-term (acute) …

  10. Insomnia - Causes and Risk Factors | NHLBI, NIH

    Mar 24, 2022 · Learn about risk factors that can contribute to insomnia, including age, occupation, and lifestyle.