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1. www.webmd.com › balance › how-tired-is-too-tiredFatigue and Exhaustion: Causes, Symptoms, and Treatment - WebMD

   www.webmd.com › balance › how-tired-is-too-tired

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   2023年10月4日 · Fatigue is a lingering tiredness that is constant and limiting. With fatigue, you have unexplained, persistent, and relapsing exhaustion. It's similar to how you feel when you have the flu or have...

2. www.webmd.com › brain › vertigo-symptoms-causes-treatmentVertigo: Causes, Symptoms, and Treatment - WebMD

   www.webmd.com › brain › vertigo-symptoms-causes-treatment

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   2022年12月8日 · Vertigo is a sensation of feeling off balance. If you have these dizzy spells, you might feel like you are spinning or that the world around you is spinning. Causes of Vertigo. Vertigo is...

3. www.webmd.com › heart-disease › atrial-fibrillationAtrial Fibrillation (AFib): Causes, Symptoms, and Treatment ...

   www.webmd.com › heart-disease › atrial-fibrillation

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   2023年11月15日 · Atrial fibrillation, also called AF or AFib, is a quivery, fluttery heartbeat. You might also hear the doctor call it arrhythmia. It means your heart’s normal rhythm is out of whack. Because your...

4. www.webmd.com › diabetes › glycated-hemoglobin-test-hba1cHbA1c (Hemoglobin A1c): A1c Chart, Test, Levels, & ...

   www.webmd.com › diabetes › glycated-hemoglobin-test-hba1c

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   2023年11月29日 · 14 min read. What Is an A1c Test? The hemoglobin A1c test tells you your average level of blood sugar over the past 2-3 months. It's also called HbA1c, the glycated hemoglobin test, or...

5. www.webmd.com › a-to-z-guides › ferritinFerritin Blood Test: High vs Low Ferritin Levels, Normal ...

   www.webmd.com › a-to-z-guides › ferritin

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   2023年11月14日 · What Is a Ferritin Blood Test? A ferritin test measures the amount of a blood protein called ferritin, which stores iron. Think of your body as a kitchen pantry. Most of it is stocked with food...

6. www.webmd.com › a-to-z-guides › prothrombin-timeProthrombin Time (PT/INR) Blood Test for Clotting Time - WebMD

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   2023年5月28日 · What Is a Prothrombin Time Test? Medically Reviewed by Carol DerSarkissian, MD on May 28, 2023. Written by WebMD Editorial Contributors. What Does a PT Test Look For? When Would I Need a PT Test?...

7. www.webmd.com › covid › covid-19-symptomsCoronavirus Symptoms: Early Signs, Serious Symptoms - WebMD

   www.webmd.com › covid › covid-19-symptoms

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   2023年11月10日 · COVID-19 is a respiratory condition caused by a coronavirus. Some people are infected but don’t notice any COVID-19 symptoms (doctors call that being asymptomatic). Most people have mild symptoms...