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  2. Common cold - Symptoms and causes - Mayo Clinic

    • The common cold is an illness affecting your nose and throat. Most often, it's harmless, but it might not feel that way. Germs called viruses cause a common cold. Often, adults may have two or three colds e… See more

    Symptoms

    Most often, common cold symptoms start 1 to 3 days after someone is exposed to a cold virus. Symptoms vary. They can include: 1. Runny or stuffy nose. 2. Sore or scratchy thr… See more

    Mayo Clinic
    Causes

    Many viruses can cause a common cold. Rhinoviruses are the most common cause. A … See more

    Mayo Clinic
    Risk Factors

    These factors can increase the chances of getting a cold: 1. Age.Infants and young children have a greater risk of colds than other people, especially if they spend time in child car… See more

    Mayo Clinic
    Complications

    These conditions can occur along with your cold: 1. Middle ear infection.This is the swelling and build-up of fluids in the space behind the eardrum. It may be caused by a virus or bac… See more

    Mayo Clinic
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  1. Symptoms of COVID-19 | COVID-19 | CDC - Centers for …

    Jun 25, 2024 · People with COVID-19 have a wide range of symptoms ranging from mild symptoms to severe illness. Symptoms may appear 2-14 days after exposure to the virus. Symptoms may start as mild, and some people will …

  2. Coronavirus disease 2019 (COVID-19) - Symptoms and …

    Most people with COVID-19 have mild to moderate symptoms. But COVID-19 can cause serious medical complications and lead to death. Older adults or people who already have medical conditions are at greater risk of serious …

  3. Bacterial Infection: Causes, Symptoms, Treatment

    Bacterial infections are any illness or condition caused by bacterial growth or poisons (toxins). You can get sick from getting harmful bacteria in your skin, gut (GI tract), lungs, heart, brain, blood or anywhere else in your body.

  4. Viral Infection: Causes, Symptoms, Tests & Treatment - Cleveland …

  5. Fever - Symptoms & causes - Mayo Clinic

    May 7, 2022 · A fever is a temporary rise in body temperature. It's one part of an overall response from the body's immune system. A fever is usually caused by an infection. For most children and adults, a fever may be uncomfortable. But it …

  6. A to Z list of common illnesses and conditions | NHS …

    A to Z list of common illnesses and conditions - including their symptoms, causes and treatments.

  7. COVID-19 expert answers questions on how the virus makes …

  8. What’s Happening in My Body When I Have a Fever?

    Mar 5, 2019 · A fever of 101 degrees or higher is commonly associated with the flu. It’s uncomfortable, but it’s actually part of the body’s immune response. Fluids and anti-inflammatory medicines can help you stay comfortable.

  9. Symptoms of Serious Diseases and Health Problems - MedicineNet