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  2. Doctors Explain What It Means When You Have Chills But No Fever

    www.aol.com/9-reasons-might-chills-no-210200160.html

    Signs of shock include cold, sweaty skin, as well as rapid breathing and a weak, rapid pulse. Call 911 if you notice signs of shock, as it needs immediate medical attention. 12.

  3. Serum sickness - Wikipedia

    en.wikipedia.org/wiki/Serum_sickness

    Serum sickness is a type III hypersensitivity reaction, caused by immune complexes. [2] When an antiserum is given, the human immune system can mistake the proteins present for harmful antigens. The body produces antibodies, which combine with these proteins to form immune complexes. [2]

  4. Sickness behavior - Wikipedia

    en.wikipedia.org/wiki/Sickness_behavior

    Ancher, Michael, "The Sick Girl", 1882, Statens Museum for Kunst. Sickness behavior is a coordinated set of adaptive behavioral changes that develop in ill individuals during the course of an infection. [1] They usually, but not always, [2] accompany fever and aid survival.

  5. Inflammation - Wikipedia

    en.wikipedia.org/wiki/Inflammation

    The immune system is often involved with inflammatory disorders, as demonstrated in both allergic reactions and some myopathies, with many immune system disorders resulting in abnormal inflammation. Non-immune diseases with causal origins in inflammatory processes include cancer, atherosclerosis, and ischemic heart disease. [9]

  6. Why You’re Always So Hot and Sweaty - AOL

    www.aol.com/why-always-hot-sweaty-040000902.html

    If you’re not hot-natured but suddenly seem to feel warm and sweaty all the time, it could be a sign that something is changing in your body. And it doesn’t hurt to check in with your doctor ...

  7. Why does the flu make some people sick but not others? - AOL

    www.aol.com/lifestyle/why-does-flu-people-sick...

    Adults 65 years of age and older can have a weaker immune response to flu vaccines, making them more likely to get sick with the flu or get flu complications even when vaccinated, according to the ...

  8. Fever - Wikipedia

    en.wikipedia.org/wiki/Fever

    [7] [54] A neutropenic fever, also called febrile neutropenia, is a fever in the absence of normal immune system function. [55] Because of the lack of infection-fighting neutrophils , a bacterial infection can spread rapidly; this fever is, therefore, usually considered to require urgent medical attention. [ 56 ]

  9. Always asymptomatic? If you never get sick from Covid, it ...

    www.aol.com/always-asymptomatic-never-sick-covid...

    “These are highly variable immune system molecules that sit on the surface of all the cells in the body and are very different in everyone,” said Jill Hollenbach, a professor of neurology at ...