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Muscle inflammation, or myositis, is an inflammatory myopathy characterised by the inflammation of muscles. It is an autoimmune disease caused by white blood cells of the immune system, which normally protect the body from infections. Myositis can be triggered by an injury, infection, or autoimmune disease, and can cause muscle weakness, fatigue, and pain. It can affect the whole body and impact muscle strength and endurance, making everyday tasks difficult. Myositis can be treated with drugs that suppress the immune system, and in rare cases, can lead to permanent kidney damage.
| Characteristics | Values |
|---|---|
| Name | Myositis |
| Other Names | Idiopathic inflammatory myopathies (IIM), inflammatory myopathy |
| Cause | Injury, infection, autoimmune disease |
| Symptoms | Muscle inflammation, weakness, fatigue, pain, difficulty swallowing, shortness of breath, skin inflammation or rashes |
| Diagnosis | Physical exam, lab tests, imaging tests, muscle biopsy |
| Treatment | Drugs that suppress the immune system, corticosteroids, medications, physical therapy, exercise, heat therapy, assistive devices, rest |
| Prevention | N/A |
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What You'll Learn
- Myositis: an autoimmune disease causing muscle inflammation
- Lupus, scleroderma, and vasculitis: conditions with muscle inflammation as a secondary feature
- Muscle pain: a common symptom of muscle inflammation
- Muscle weakness: inflammation can cause a loss of muscle strength
- Treatment: drugs, physical therapy, and rest can help manage symptoms
Myositis: an autoimmune disease causing muscle inflammation
Myositis is a chronic inflammatory myopathy characterised by inflammation of the muscles in the body. It is an autoimmune disease where the immune system mistakenly attacks the body's own healthy tissues, creating unnecessary inflammation. This inflammation can then cause problems, such as muscle weakness and fatigue, and in some cases, muscle pain. The exact number of people affected by myositis is unknown, but estimates show around 50,000 people in the US are living with the disease.
There are two specific types of myositis: polymyositis and dermatomyositis. Polymyositis causes muscle weakness, usually in the muscles closest to the trunk of the body. Dermatomyositis causes similar symptoms, but with the addition of a skin rash. Both types of myositis are autoimmune conditions, and the inflammation is caused by white blood cells of the immune system, which are normally meant to protect the body from infections.
In addition to muscle inflammation and weakness, myositis can also affect muscle endurance, with patients often reporting significant fatigue and difficulty sustaining physical efforts. In some cases, muscle pain may be present, and patients may experience arthritis in the hands, lung inflammation, and skin inflammation or rashes. Each patient's experience of the disease and mix of symptoms is unique, with some cases being mild and others severe.
Inclusion body myositis (IBM) is a type of myositis where, in addition to inflammation, there is also a build-up of protein in the muscle cells. IBM does not respond to steroids or disease-modifying anti-rheumatic drugs (DMARDs) that are used to treat other types of myositis. It is more common in men and generally occurs in people over the age of 50.
There is no cure for myositis, but the symptoms can be treated. Polymyositis and dermatomyositis are typically treated with high doses of corticosteroids. Other treatment options include medications, physical therapy, exercise, heat therapy, assistive devices, and rest.
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Lupus, scleroderma, and vasculitis: conditions with muscle inflammation as a secondary feature
Muscle inflammation, or myositis, is an autoimmune disease characterised by inflammation of the muscles. While the exact number of people with myositis is unknown, estimates suggest there are about 50,000 cases in the US. Myositis is caused by white blood cells of the immune system, which, instead of protecting the body from infections, mistakenly injure muscles and other tissues, causing muscle weakness and other related conditions.
Lupus, scleroderma, and vasculitis are conditions that may have muscle inflammation as a secondary feature. Lupus, in particular, often causes myalgia, or aches and pains in the muscles, and less frequently, myositis, or inflammation of the muscles, usually in the hips, thighs, shoulders, and upper arms. The most common symptom of lupus myositis is muscle weakness, which can make it difficult to perform everyday tasks such as standing up from a chair or raising one's arms. In addition, certain medications used to treat lupus, such as steroids, can also induce muscle weakness as a side effect. However, this typically resolves once the medication is discontinued.
Lupus patients often experience joint and muscle issues, and they are also at an increased risk of developing osteoporosis (low bone density) and avascular necrosis (AVN), a condition that causes bone tissue to die due to insufficient blood flow. AVN can result in pain in the hips, knees, or shoulders, followed by stiffness, muscle spasms, and restricted movement in the affected joints.
Scleroderma and vasculitis, similar to lupus, are rheumatic diseases that can occur alongside myositis. Myositis can manifest in various forms and affect the entire body, not just the muscles. Symptoms may include muscle weakness, fatigue, and, in some cases, muscle pain. Patients may also experience arthritis in the hands resembling rheumatoid arthritis, lung inflammation leading to coughing or shortness of breath, and skin inflammation or rashes.
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Muscle pain: a common symptom of muscle inflammation
Muscle pain, or myalgia, is a common symptom of muscle inflammation, or myositis. Myositis is an autoimmune disease characterised by inflammation of the muscles used for movement. While the exact number of people affected by myositis is unknown, estimates suggest that about 50,000 people in the US are living with the disease. Myositis can affect the whole body and cause muscle weakness, fatigue, and pain. The most common muscles to be affected are those around the shoulders, hips, and thighs.
The muscle inflammation in myositis is caused by white blood cells of the immune system, which normally protect the body from infections. In myositis, the immune system mistakenly injures muscles and other tissues. It is not clear what causes these conditions to develop, but anyone can get myositis, with risk factors including age, sex, and ethnicity. People in their middle age, women, and those with Sub-Saharan African descent are at higher risk.
Myositis can be diagnosed through physical exams, lab tests, imaging tests, and muscle biopsies. While there is no cure for myositis, its symptoms can be treated through drugs that suppress the immune system, such as high doses of corticosteroids. Other treatment options include medications, physical therapy, exercise, heat therapy, assistive devices, and rest.
Muscle pain associated with myositis can be treated with over-the-counter pain relievers, such as nonsteroidal anti-inflammatory drugs (NSAIDs) like aspirin and ibuprofen, which also reduce inflammation. Topical treatments containing ingredients like menthol, capsaicin, or lidocaine can also help to numb the area and reduce soreness.
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Muscle weakness: inflammation can cause a loss of muscle strength
Muscle inflammation, or myositis, is a condition where muscles become inflamed. This inflammation can be caused by injury, infection, autoimmune disease, or drug side effects. Myositis can affect the whole body, not just the muscles, and can cause muscle weakness and loss of strength.
Myositis is an autoimmune disease where the white blood cells of the immune system, which are supposed to protect the body from infections, mistakenly injure muscles and other tissues, causing inflammation and muscle weakness. The most common muscles to be affected are those around the shoulders, hips, thighs, neck, and back. This weakness can make it difficult for people with myositis to walk, use their arms, grip objects, or get up from a chair or the floor after a fall. In some cases, muscle inflammation can also affect the muscles used for breathing and swallowing, which can lead to severe complications and even respiratory failure if not treated.
In addition to muscle weakness, people with myositis may experience muscle pain, fatigue, and difficulty sustaining physical efforts. The condition can also cause inflammatory arthritis, with pain and swelling in the joints, as well as lung inflammation, skin inflammation or rashes, and coughing or shortness of breath. Each patient's experience of the disease is unique, with some cases being mild and others severe.
There are two specific types of myositis: polymyositis and dermatomyositis. Polymyositis usually causes weakness in the muscles closest to the body's trunk, such as the hips, thighs, neck, and shoulders. Dermatomyositis causes similar muscle weakness, plus a skin rash on the upper eyelids, face, neck, and hands. There is no cure for these diseases, but symptoms can be treated with high doses of corticosteroids, medications, physical therapy, exercise, heat therapy, assistive devices, and rest.
In addition to myositis, there are other conditions that can cause muscle weakness and loss of strength, including sarcopenia (age-related muscle loss), muscle strain, infectious conditions such as the flu or Lyme disease, neurological conditions, infections, and chronic illnesses.
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Treatment: drugs, physical therapy, and rest can help manage symptoms
Muscle inflammation, or myositis, is an autoimmune disease characterised by inflammation of the muscles. It is caused by white blood cells of the immune system, which, instead of protecting the body from infections, mistakenly injure muscles and other tissues. The disease can affect the whole body and cause muscle weakness, fatigue, and pain.
Treatment
Drugs
Nonsteroidal anti-inflammatory drugs (NSAIDs) can be used to treat muscle inflammation. NSAIDs can be bought over the counter or prescribed by a doctor. They are effective pain relievers and can also reduce fever and inflammation. NSAIDs come in several forms, including creams or gels, injections, and suppositories. It is important to note that NSAIDs may not be suitable for those with stomach or heart conditions, and they should not be used for more than 10 days without checking with a doctor.
Physical Therapy
Physical therapy is another common treatment for muscle inflammation. Therapists use various techniques such as manual therapy, which includes manipulation of muscles, kneading injured muscles, and joint manipulation, to reduce inflammation and relax the muscles. Ultrasound therapy is another safe and effective technique that produces anti-inflammatory effects. Additionally, regular physical exercise provides anti-inflammatory benefits as it reduces levels of TNF alpha, a protein that causes inflammation, and increases levels of interleukin 6, a protein that reduces inflammation.
Rest
Rest is crucial for muscle recovery. Muscle inflammation can be caused by overuse or strain, leading to small tears in the muscles. Giving the muscles time to rest allows them to heal and recover. Rest is especially important in cases of traumatic injuries, such as sports injuries or accidents, where blunt force can bruise or tear the muscles.
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Frequently asked questions
Muscle inflammation is medically referred to as myositis. It is an autoimmune disease characterised by inflammation of the muscles used for movement.
The symptoms of muscle inflammation vary between individuals but can include muscle weakness, pain, fatigue, and in some cases, a skin rash. The weakening of muscles can make everyday tasks such as climbing stairs, brushing hair, and getting in and out of cars difficult.
Muscle inflammation can be caused by injury, infection, or autoimmune disease. It can also be triggered by certain medications and drugs, including statins and steroids. In some cases, vigorous exercise can lead to muscle inflammation.
There is currently no cure for muscle inflammation, but the symptoms can be treated. Treatment options include high doses of corticosteroids, medications, physical therapy, exercise, heat therapy, assistive devices, and rest.
