
Muscle fever, also known as delayed onset muscle soreness (DOMS), is a sore, painful feeling in the muscles after unfamiliar or intense exercise. It is a type of muscle pain or myalgia, which has many causes, including muscle damage from exercise. DOMS is characterised by muscle stiffness and soreness, which typically begins 12 to 24 hours after exercise and peaks between 24 to 72 hours. The pain usually subsides within 4 days but can last up to a week. It is caused by microscopic tears and inflammation in the muscles, which can be treated with massages, heat packs, and pain relievers.
| Characteristics | Values |
|---|---|
| Other Names | Delayed Onset Muscle Soreness (DOMS), Myalgia (medical term for muscle pain) |
| Cause | Temporary microtears and inflammation in muscle tissue, caused by eccentric exercises |
| Symptoms | Muscle pain, stiffness, soreness, tightness, tenderness, reduced strength, reduced range of motion, muscle swelling |
| Treatment | Massages, heat packs, pain relievers, cryotherapy, self-myofascial release, magnesium supplementation |
| Prevention | Implementing recovery strategies, stretching, gentle movement, yoga, low- to moderate-intensity walking, cycling, swimming |
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What You'll Learn
- Muscle fever, or delayed onset muscle soreness (DOMS), is a type of muscle strain injury
- DOMS is caused by strenuous or eccentric exercise, resulting in temporary muscle damage and inflammation
- Symptoms of DOMS include muscle pain, stiffness, tightness, tenderness, and reduced strength and range of motion
- DOMS treatment includes rest, ice, compression, and elevation. Self-myofascial release and gentle movement can also aid recovery
- DOMS is distinct from acute muscle soreness, which occurs during or immediately after exercise due to lactic acid buildup

Muscle fever, or delayed onset muscle soreness (DOMS), is a type of muscle strain injury
DOMS is believed to be caused by microscopic tears in the muscle fibres and surrounding connective tissue, leading to muscle inflammation. This inflammation stimulates nerve endings and causes pain. The pain is often described as a dull, throbbing sensation that can be felt both during movement and at rest.
The most common activities that cause DOMS are those that involve eccentric muscle contractions, where the muscle is lengthening while under tension. Examples include downhill running, squatting, and lifting weights. However, any form of exercise that the body is unaccustomed to can lead to DOMS.
The treatment for DOMS typically involves rest, gentle stretching, and the application of ice or heat to alleviate pain and promote healing. Non-steroidal anti-inflammatory drugs (NSAIDs) may also be used to reduce inflammation and pain.
While DOMS is a common and usually mild condition, it is important to differentiate it from other more serious muscle injuries. If the pain is severe, immediate, or accompanied by swelling, it may indicate a more severe muscle strain or tear that requires medical attention.
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DOMS is caused by strenuous or eccentric exercise, resulting in temporary muscle damage and inflammation
Delayed Onset Muscle Soreness, or DOMS, is a condition characterised by sore, aching, and painful feelings in the muscles. DOMS is caused by strenuous or eccentric exercise, resulting in temporary muscle damage and inflammation.
Eccentric exercises cause muscles to be tensed and lengthened simultaneously. For example, the controlled downward motion of straightening the forearm after a bicep curl is an eccentric movement. Eccentric exercises cause greater disruption to the structural elements of the muscle and connective tissue than concentric exercises. This increased tension per unit area causes greater injury to the tissue.
DOMS is a type 1 muscle strain injury, with a pain-free period of 12 to 24 hours and peak soreness between 24 to 72 hours. The pain typically subsides within a week. The soreness is caused by microscopic tears and muscle damage, which results in inflammation. This inflammatory response releases prostaglandin E2 and leukotriene hormones, which can cause pain and contribute to swelling.
DOMS can be treated with massages, heat packs, pain relievers, and menthol-based topical analgesics. A 2021 review also notes that cryotherapy, or cold therapy, may help reduce pain. Implementing recovery strategies is vital, as preventing and managing DOMS is key to restoring muscular strength and performance levels.
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Symptoms of DOMS include muscle pain, stiffness, tightness, tenderness, and reduced strength and range of motion
Delayed Onset Muscle Soreness, or DOMS, is a type of muscle strain injury that causes muscle pain, stiffness, tightness, tenderness, and reduced strength and range of motion. It is often referred to as "muscle fever" and is characterised by a sore, aching, and painful feeling in the muscles. DOMS typically occurs after strenuous or unusual physical activity that stresses the muscles, such as weightlifting, high-intensity training, or any activity that an individual is unaccustomed to.
The symptoms of DOMS usually begin within 12 to 24 hours after a workout and peak between 24 to 72 hours. The pain and stiffness can last for several days and may even persist for up to a week. During this time, individuals may experience varying levels of discomfort, from tightness and slight achiness to more intense pain.
The underlying cause of DOMS is believed to be microtrauma or microscopic tears in the muscle fibres, resulting from eccentric exercises or lengthening contractions of the muscle. This microtrauma leads to inflammation and the release of certain hormones, causing pain and contributing to swelling. The affected muscles may also exhibit reduced strength and range of motion.
The severity and duration of DOMS symptoms can vary depending on the type of exercise, the number of eccentric contractions, and individual factors. While there is no quick fix for DOMS, various techniques can help manage the symptoms, including massages, heat packs, pain relievers, and gentle movements like yoga or walking.
It is important to note that DOMS is different from acute muscle soreness, which occurs during or immediately after a workout due to lactic acid buildup. DOMS, on the other hand, is a delayed response to strenuous or unusual physical activity, and it is characterised by a more intense and prolonged soreness that typically starts a day or two after the exercise.
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DOMS treatment includes rest, ice, compression, and elevation. Self-myofascial release and gentle movement can also aid recovery
Delayed onset muscle soreness (DOMS) is muscle pain that occurs after working out, particularly when you've engaged in a new or challenging physical activity. The pain typically peaks within 24 to 72 hours post-exercise. While the soreness is perfectly normal, it can be uncomfortable and hinder your ability to move freely.
DOMS treatment includes rest, ice, compression, and elevation. Resting the affected muscle group is crucial to recovery, as this gives the muscle time to repair and rebuild. Applying ice or cold therapy can help reduce inflammation and provide temporary pain relief. Compression garments or elastic bandages can be used to reduce swelling and provide support to the sore muscles. Finally, elevation of the affected area above the level of the heart can help reduce swelling and promote healing by improving blood flow.
In addition to the RICE (rest, ice, compression, elevation) method, self-myofascial release techniques can be beneficial. This involves using a foam roller or massage ball to apply pressure to the sore muscles, helping to relieve tension and improve flexibility. Gentle movement, such as light walking or stretching, can also aid in recovery by increasing blood flow to the affected muscles and reducing stiffness. It is important to listen to your body and not push yourself too hard, as excessive exercise can exacerbate the pain and delay recovery.
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DOMS is distinct from acute muscle soreness, which occurs during or immediately after exercise due to lactic acid buildup
Delayed Onset Muscle Soreness (DOMS), also known as 'muscle fever', is a sore, painful feeling in the muscles after unfamiliar or unaccustomed intense exercise. It is a type of muscle strain injury, with a pain-free period of 12 to 24 hours and peak soreness between 24 to 72 hours. It is important to distinguish DOMS from acute muscle soreness, which occurs during or immediately after exercise.
Acute muscle soreness is a burning sensation in the muscles during or immediately after intense exercise due to a buildup of lactic acid. This type of soreness is not related to DOMS, which is caused by microscopic tears and muscle damage. DOMS can affect anyone, regardless of their fitness level, and is triggered by eccentric exercises that cause muscle tension and lengthening simultaneously. Examples of eccentric exercises include the controlled downward motion when straightening your forearm after a bicep curl or the tension in your quads when running downhill.
The pain and stiffness associated with DOMS result from temporary microtears and inflammation in the muscle tissue. This inflammation releases prostaglandin E2 and leukotriene hormones, causing pain and contributing to swelling. While the mechanism of DOMS is not fully understood, it is believed to be caused by microtrauma or mechanical damage at a very small scale to the exercised muscles. This damage can lead to a reduction in muscle strength and range of motion, as well as muscle swelling.
To manage DOMS, individuals can consider implementing recovery strategies such as massages, heat packs, pain relievers, and menthol-based topical analgesics. Additionally, gentle movements, stretching, and low- to moderate-intensity activities like walking, cycling, or swimming can help keep muscles active during recovery. It is important to note that severe or recurring DOMS can hinder progress, so taking rest days or avoiding high-intensity exercises during this time is crucial.
While acute muscle soreness typically disappears shortly after stopping the exercise, the pain and tenderness associated with DOMS can persist for several days. This delayed onset of soreness is why it is essential to differentiate between the two conditions and implement appropriate recovery strategies to manage symptoms and restore muscular strength and performance levels effectively.
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Frequently asked questions
Muscle fever, or delayed-onset muscle soreness (DOMS), is muscle pain that occurs after working out or performing a physical activity.
Muscle fever is caused by microscopic damage to the muscle fibres, which leads to inflammation.
Muscle fever typically lasts anywhere from 24 hours to 5 days, depending on the severity of the muscle damage.
Rest, ice, compression, and elevation (RICE) are commonly recommended for treating muscle fever. Over-the-counter pain medications may also help alleviate symptoms.











































