What are the symptoms of obstructive sleep apnea and how is it diagnosed?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Obstructive sleep apnea (OSA) is a common sleep disorder marked by loud snoring, excessive daytime tiredness, and repeated pauses in breathing during sleep. Doctors diagnose OSA through a sleep study (polysomnography), which monitors breathing patterns, oxygen levels, heart rate, and brain activity overnight.

If you're experiencing these symptoms, don't wait to find answers. Taking a free, instant, online symptom check can help you identify potential causes, understand your risk for OSA, and guide your next steps toward proper diagnosis and treatment—empowering you to have a more informed conversation with your doctor.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Learn if obstructive sleep apnea fits you Discover likely causes of your sleep symptoms See whether your breathing pauses need care Find OTC options for sleep-related symptoms Find a sleep specialist near you Learn medically proven home remedies for apnea Understand if symptoms suggest a serious sleep disorder

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Explanation

Obstructive sleep apnea (OSA) is a condition where breathing stops and starts during sleep due to blocked airways. The main symptoms include loud snoring, feeling very tired during the day, and having pauses in breathing while sleeping. Some people may also experience morning headaches and trouble concentrating.

Diagnosis

OSA is usually diagnosed with a sleep study, also known as a polysomnography. This test records various body functions while you sleep, such as breathing patterns, oxygen levels, and heart rate. The results help doctors determine if you have OSA and how severe it is.

Key Symptoms

Loud Snoring: Often noticed by a bed partner.
Daytime Sleepiness: Feeling very tired or falling asleep during the day.
Breathing Pauses: Gasping or choking sounds during sleep.

Understanding these symptoms and getting a proper diagnosis is important for managing OSA effectively. If you think you or someone you know might have OSA, you can use a free symptom checker to help assess your symptoms before talking to a healthcare provider for further evaluation.

(References)

Patel SR. (2019). Obstructive Sleep Apnea. Annals of internal medicine, 31791057.
Stansbury RC, & Strollo PJ. (2015). Clinical manifestations of sleep apnea. Journal of thoracic disease, 26543619.
Prisant LM, Dillard TA, & Blanchard AR. (2006). Obstructive sleep apnea syndrome. Journal of clinical hypertension (Greenwich, Conn.), 17028491.

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