Fever-Induced Muscle Pain: What's The Link?

can high fever cause muscle pain

Muscle pain, or myalgia, is a common symptom of many illnesses, including the flu, common cold, and viral or bacterial infections. It can also be caused by intense physical activity or exercise. When a person has a fever, it is often accompanied by muscle pain and other symptoms such as chills, cough, and headache. While fever and muscle pain are usually not serious and can be treated at home, they can also indicate a more severe condition that requires medical attention. For instance, a 39-year-old woman presented to the emergency department with a history of fever and diffuse muscle aches, which was diagnosed as a urinary tract infection.

Characteristics Values
High fever and muscle pain cause Infection, such as the cold or flu
Muscle pain type Delayed-onset muscle soreness, myalgia
Treatment Over-the-counter medications like ibuprofen, naproxen, acetaminophen or aspirin
Other symptoms Chills, cough, headache, dizziness, trouble breathing, chest pain, stomach pain
Muscle pain cause Immune system releases white blood cells to fight infection, causing inflammation

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Flu, common cold, and other infections

Fever is often a symptom of an infection in the body, such as the common cold or flu. Other infections that can cause fever include bronchitis, strep throat, urinary tract infections, and mononucleosis.

Fever and muscle pain are common symptoms of the flu. During the 2019-2020 flu season, about 56 million cases of influenza were reported, with many of those cases involving muscle and joint aches. The muscle pain experienced during the flu is due to the body's immune response to the infection, not the flu itself. The body produces cytokines, which are small proteins used for cell signaling, causing inflammation in the muscles and joints. This inflammation can cause pain similar to mild arthritis.

The common cold can also cause fever and muscle pain, but fever is less common in adults. Children are more likely to experience a fever with a cold. Cold symptoms usually begin with a sore throat, followed by nasal symptoms, a runny nose, congestion, and a cough.

In addition to the flu and common cold, other infections can cause muscle pain and fever. For example, bacterial infections can trigger inflammation throughout the body, leading to muscle pain. Sinus infections (sinusitis) can also cause fever and congestion, with pain around the eyes and face.

It is important to note that muscle pain after exercise is normal and is part of the process of building stronger muscles. However, if the muscle pain is more severe or lasts longer than expected, it may be a sign of overtraining or a more serious condition requiring medical attention.

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Urinary tract infections

A urinary tract infection (UTI) is an infection in the urinary system. This system makes, stores, and carries urine out of the body. UTIs are very common, and they can involve any part of the urinary tract, including the kidneys, ureters, bladder, and urethra. Most UTIs affect the bladder and urethra.

UTIs are usually caused by bacteria, especially E. coli, entering the urinary tract. Symptoms include a frequent urge to urinate, a burning sensation during urination, and cloudy or strong-smelling urine. While not everyone with a UTI experiences it, fever is likely to accompany more severe infections, such as an upper UTI, and if the infection has spread to the kidneys. In some cases, UTIs can cause symptoms that resemble those of the flu, such as fever, chills, and fatigue.

If a person is pregnant, has an underlying health condition, or has a history of recurrent UTIs, they should consult a healthcare professional when a fever develops. A doctor may recommend over-the-counter pain medication to help with uncomfortable UTI symptoms and reduce fever. Drinking plenty of water and urinating can also help flush out bacteria from the urinary tract and promote healing.

If a UTI is more serious or there is a higher risk of complications, individuals may need hospital treatment. Antibiotics are typically used to treat UTIs, and symptoms should improve within 3-5 days after starting the medication. It is important to take the full course of antibiotics as instructed by a healthcare provider to ensure the UTI goes away.

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Group A streptococcal infection

A high fever is often a symptom of an infection, such as the cold or flu, and can be accompanied by muscle pain. Group A Streptococcus (GAS) is a type of bacteria that can cause a broad range of infections and complications, from mild to severe.

In rare cases, GAS can cause severe and potentially life-threatening infections known as invasive group A streptococcal disease (iGAS). iGAS occurs when the bacteria invade parts of the body that are typically sterile, such as the blood, lungs, central nervous system, bones, joints, or deep muscle and fat tissue. Symptoms of iGAS can include high fever, dizziness, headache, muscle aches, and skin changes such as redness, warmth, swelling, and tenderness.

The spread of group A streptococcal infections can be reduced by practising good hygiene, including hand washing, especially after coughing, sneezing, and before eating. It is important to seek medical attention if you suspect a group A streptococcal infection, as early treatment with antibiotics can help prevent severe complications.

To manage a high fever and associated muscle pain, it is recommended to take over-the-counter medications such as ibuprofen, naproxen, acetaminophen, or aspirin. Staying hydrated with water, flavoured drinks, teas, or sports drinks is also important. Applying lukewarm washcloths to the forehead or wrists can help reduce fever.

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Exercise-induced muscle pain

The exact cause of DOMS is not known, but it is thought to be related to temporary muscle damage and inflammation. This inflammation is believed to be caused by a combination of factors, including acids, ions, proteins, and hormones. While lactic acid was previously thought to be the main cause of muscle pain, recent evidence suggests that it is not the only factor.

DOMS is considered a type 1 muscle strain injury, with a pain-free period of 12 to 24 hours, and peak soreness between 24 to 72 hours. During this time, it is normal to experience reduced range of motion and muscle performance. However, DOMS generally improves on its own within a few days to a week. Implementing recovery strategies is vital for preventing and managing DOMS and restoring muscular strength and performance levels.

To alleviate muscle pain, it is recommended to apply ice to the affected area for 10 to 15 minutes immediately after exercise. Additionally, nonsteroidal anti-inflammatory drugs can be used to manage exercise-induced muscle injuries and pain. Heat therapy, such as lukewarm baths, can also help reduce muscle pain.

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Other flu-like symptoms

A high fever is an indication that your body is fighting off an infection. The most common cause of fever is an infection, such as the cold or flu. Other flu-like symptoms include:

Chills

You may experience chills, which can be accompanied by shivering and shaking. This is your body's way of generating heat to fight off the infection.

Cough

A persistent cough is a common symptom of the flu, and it can be dry or productive. The cough may worsen if the flu develops into a more serious condition, such as bronchitis or pneumonia.

Headache

Headaches can range from mild to severe and may be accompanied by other symptoms such as nausea, sensitivity to light (photophobia), and blurred vision.

Fatigue

Feeling exhausted and drained of energy is a common symptom of the flu. Your body is using a lot of energy to fight off the infection, so it's important to get plenty of rest.

Muscle pain and weakness

As mentioned, muscle pain and weakness are common flu-like symptoms. This is due to the body's immune response to the infection, and it can affect your joints as well as your muscles.

It is important to note that while most flu-like symptoms can be treated at home, if they persist or worsen, it is recommended to seek medical attention.

Frequently asked questions

Yes, muscle pain is a common symptom of a high fever. This is due to the body's immune response to an infection.

There are several ways to reduce a high fever and any associated muscle pain. It is recommended to take over-the-counter medications such as ibuprofen, naproxen, acetaminophen, or aspirin. Staying hydrated with water, flavoured water, teas, sports drinks, or gelatin can also help. Applying lukewarm washcloths to the forehead or wrists can help reduce fever symptoms.

If your fever and muscle pain last longer than expected, it may be a sign of a more serious condition. If home remedies do not help relieve symptoms, it is recommended to seek medical attention.

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