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  1. Fatigue Causes - Mayo Clinic

    Feb 11, 2023 · Most of the time fatigue can be traced to one or more lifestyle issues, such as poor sleep habits or lack of exercise. Fatigue can be caused by a medicine or linked to depression. Sometimes …

  2. Fatigue Causes - Mayo Clinic

    Fatigue is a common symptom. Almost everyone feels it during short-term illness. Fortunately, fatigue usually goes away when the illness is over.

  3. Fatigue When to see a doctor - Mayo Clinic

    Feb 11, 2023 · Many conditions and lifestyle factors can cause this common symptom.

  4. Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)

    May 11, 2023 · Overview Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a complicated disorder. It causes extreme fatigue that lasts for at least six months. Symptoms worsen …

  5. Cancer fatigue: Why it occurs and how to cope - Mayo Clinic

    Fatigue affects most people during cancer treatment. Cancer fatigue can result from the side effects of treatment or the cancer itself. Here's a look at the causes and what you can do to cope when you're …

  6. Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)

    May 11, 2023 · Diagnosis There's no single test to confirm a diagnosis of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Symptoms can mimic those of many other …

  7. Coronavirus disease 2019 (COVID-19) - Symptoms and causes

    Oct 21, 2025 · Coronavirus disease 2019 (COVID-19) is an illness caused by the virus SARS-CoV-2. Learn more about the symptoms, risks and ways to protect yourself.

  8. Stress symptoms: Effects on your body and behavior - Mayo Clinic

    Aug 10, 2023 · Stress symptoms can affect your body, your thoughts and feelings, and your behavior. Knowing common stress symptoms can help you manage them. Stress that's not dealt with can lead …

  9. Eyestrain - Symptoms and causes - Mayo Clinic

    Jul 2, 2024 · Overview Eyestrain is a common condition that occurs when your eyes get tired from intense use, such as while driving long distances or staring at computer screens and other digital …

  10. Hyperthyroidism - Symptoms and causes - Mayo Clinic

    Nov 30, 2022 · Overview Hyperthyroidism happens when the thyroid gland makes too much thyroid hormone. This condition also is called overactive thyroid. Hyperthyroidism speeds up the body's …