What are the most common sleep disorders and how are they diagnosed?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Common sleep disorders include insomnia (difficulty falling or staying asleep), sleep apnea (breathing interruptions during sleep), and restless legs syndrome (uncomfortable leg sensations at night). Diagnosis typically involves a review of your medical history, overnight sleep studies (polysomnography), and validated questionnaires to assess symptom severity and patterns.

If you're experiencing poor sleep, daytime fatigue, or unusual nighttime symptoms, don't guess what's wrong. Sleep disorders often overlap and share symptoms with other health conditions, making self-diagnosis unreliable. A free, instant online symptom check can help you quickly identify possible causes, understand your risk level, and know exactly which type of doctor to see next—saving you time, worry, and unnecessary appointments.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Learn if common sleep disorders fit you Discover likely causes of your sleep issues See whether your sleep problems need care Find OTC options for sleep problems Find a sleep specialist near you Explore medically valid home remedies for sleep Understand if sleep symptoms suggest a disorder

Not seeing your question? No worries.

Submit your own Question

Explanation

Sleep disorders can affect how well you sleep and feel during the day. Some of the most common sleep disorders are:

Insomnia: This is when you have trouble falling asleep or staying asleep. It is often diagnosed by discussing your sleep habits and any stress or medical issues with a doctor.
Sleep Apnea: This is when breathing stops and starts during sleep. It is often diagnosed with a sleep study called a polysomnogram, which measures your breathing and other body functions while you sleep.
Restless Legs Syndrome (RLS): This is when you feel like you have to move your legs, especially at night. It is usually diagnosed based on your symptoms and medical history.

If you're experiencing any of these symptoms, you can get personalized insights by taking a free symptom checker test to better understand what might be affecting your sleep. Doctors may also use sleep diaries, questionnaires, and sometimes special tests to help diagnose these conditions. Understanding these disorders can help you or someone you know get the right help for better sleep.

(References)

K Pavlova M, & Latreille V. (2019). Sleep Disorders. The American journal of medicine, 30292731.
Holder S, & Narula NS. (2022). Common Sleep Disorders in Adults: Diagnosis and .... American family physician, 35426627.
Sateia MJ. (2014). International classification of sleep disorders-third edition. Chest, 25367475.

Thinking about asking ChatGPT?Ask me instead

Tell your friends about us.

We would love to help them too.

For First Time Users

What is Ubie’s Doctor’s Note?

We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.

Was this page helpful?

Purpose and positioning of servicesUbie Doctor's Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.