Flu and Muscle Aches: Where Do They Come From?

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In summary, the conversation discusses the causes of muscle aches in the context of having the flu. It is mentioned that the flu is more virulent than the common cold and that almost any virus can cause myalgias. The conversation also touches on other viruses that can cause myalgias, such as Parvovirus B-19, adenovirus, Hepatitis C, Mononucleosis, and HIV. The reason for muscle aches is explained to be due to the immune response and inflammatory mediators released during the acute infection. However, the exact mechanism of how these viruses cause myalgias is still uncertain.
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Monique
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I have been under the weather for the past few days with a flue :frown: I am wondering, where do the muscle aches come from? :frown: I was supposed to have a fun-night out in Amsterdam yesterday (Kill Bill just came out).. but nothing of that..
 
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If I remember correctly, it is due in part to the immune responce
 
  • #3
But then why with a flue and not with a cold?
 
  • #4
Flu is more virulent than the common cold. The flu migth also have genes that mislead the immune responce toward something else.
 
  • #5
almost any virus can cause myalgias (muscle aches)

Parvoviru B-19 (fifth's disease in kids), adenovirus, Hepatitis C, Mononucleosis from either cytomegolovirus or epstein barr, and Hiv; the latter can present with severe flu like illness and myalgias during the acute infection (before you seroconvert and can detect the HIV antibody.) The list is endless. It is due to the immune response and inflammatory mediators that are relesed during the acute infection. (although hep c can give you chronic clinical course with regards to myalgias and arthritis.)
 
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  • #6
Thank you adrenaline, so does anyone know on a molecular level what is going on?
 
  • #7
Originally posted by Monique
Thank you adrenaline, so does anyone know on a molecular level what is going on?

The general census among clinicians is that we don't know the exact etiology... Possibilities include direct invasion of muscle tissue by the virus, release of myotoxic cytokines or other immunologic processes. a cell biologist would probably know more of the details, but once again, I think it is still speculative how these viruses cause myalgias.
 

What is the flu and how does it cause muscle aches?

The flu, also known as influenza, is a contagious respiratory illness caused by the influenza virus. Muscle aches, also called myalgia, are a common symptom of the flu. The virus can cause inflammation and infection in the muscles, leading to pain and discomfort.

Are muscle aches always present with the flu?

No, muscle aches are not always present with the flu. Some people may experience other symptoms such as fever, cough, sore throat, and fatigue without any muscle aches. However, muscle aches are a common symptom and can be a sign of a more severe infection.

Can muscle aches be the only symptom of the flu?

Yes, it is possible for muscle aches to be the only symptom of the flu. This is more common in mild cases of the flu, where the virus does not cause other respiratory symptoms. However, if muscle aches are accompanied by other symptoms, it is important to seek medical attention to rule out other potential causes.

Why do some people experience more severe muscle aches with the flu?

The severity of muscle aches with the flu can vary from person to person. Some factors that may contribute to more severe muscle aches include the individual's immune response, age, and overall health. People with weaker immune systems or underlying health conditions may experience more intense muscle aches with the flu.

Can muscle aches from the flu be treated?

Yes, muscle aches from the flu can be treated with over-the-counter pain relievers, such as acetaminophen or ibuprofen. It is important to also rest and stay hydrated to help the body recover. In severe cases, a doctor may prescribe antiviral medication to help alleviate symptoms and shorten the duration of the flu.

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