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  1. Fever - Symptoms & causes - Mayo Clinic

    May 7, 2022 · But it usually isn't a cause for concern. For infants, however, even a low fever may mean there's a serious infection. Fevers generally go away within a few days. A number of …

  2. Fever treatment: Quick guide to treating a fever - Mayo Clinic

    Feb 4, 2025 · Should you treat a fever or let it run its course? Here's help knowing what to do.

  3. Fever: First aid - Mayo Clinic

    Jun 25, 2024 · For a baby who's less than 3 months old and has a fever, get medical help right away. Also, seek emergency medical care for a child who has any of these symptoms after …

  4. Fever - Diagnosis & treatment - Mayo Clinic

    May 7, 2022 · Write down information about the fever, such as when it started, how and where you measured it (orally or rectally, for example) and any other symptoms. Note whether you or …

  5. Scarlet fever - Symptoms & causes - Mayo Clinic

    Apr 30, 2025 · Learn more about the symptoms, causes, complications and treatment of this strep bacterial infection that causes a red rash, sore throat and high fever.

  6. Meningitis - Symptoms and causes - Mayo Clinic

    Oct 17, 2024 · The inflammation from meningitis most often triggers symptoms such as headache, fever and a stiff neck. Viral infections are the most common cause of meningitis in …

  7. Rheumatic fever - Symptoms and causes - Mayo Clinic

    Dec 2, 2023 · Symptoms can come and go or change while a person is sick with rheumatic fever. Rheumatic fever symptoms can include: Fever. Joint pain or swelling — most often the knees, …

  8. Common cold - Symptoms and causes - Mayo Clinic

    May 24, 2023 · Low-grade fever. The mucus from your nose may start out clear and become thicker and yellow or green. This change is normal. Most often, it doesn't mean that you have …

  9. Valley fever - Symptoms & causes - Mayo Clinic

    Sep 20, 2025 · If you live in or visit areas where valley fever is common, take steps to prevent infection. The dry season following a rainy season is when the chance of infection is highest.

  10. Yellow fever vaccine (subcutaneous route) - Side effects & uses

    Oct 1, 2025 · Check with your doctor right away if you have the following symptoms: fever, dark urine, headache, rash, stomach pain, unusual tiredness, or yellow eyes or skin.