The term myalgia is a medical umbrella term for muscle pain. It comes from the Greek and is used for all pain and painful conditions affecting the muscles. Muscle pain can occur in a variety of diseases and due to a wide range of causes.
The following video provides an overview of the muscles of the human body:
Myalgias are listed in the WHO disease catalog under the ICD code M79.1.
A rough distinction can be made between muscular (in the affected muscle itself) and systemic (disease of the whole body) causes.
Muscular causes of myalgia
- Consequence of overexertion: Sore muscles or tension can be the simplest explanation for myalgia. Overexertion in sport or at work then directly precedes the pain. Poor posture and lack of exercise also cause the muscles to tense up. This results in severe hardening of the muscle, which is often referred to as muscle stiffness. As they typically hurt when pressure is applied, doctors also call them trigger points
- Injuries to the musculoskeletal system: these are usually traumatic (caused by accidents) and affect both bones (skeleton) and muscles
- inflammations
- Autoimmune diseases (including rheumatism or multiple sclerosis)
Systemic causes of myalgia
- Infectious diseases (e.g. colds)
- Metabolic diseases (e.g. "diabetes" = diabetes mellitus or thyroid disease)
- Cancer (tumors)
- Nerve diseases (e.g. constrictions in the spinal column, also known as spinal canal stenosis, which can lead to constriction of the spinal cord and radiating pain)
- Vascular diseases (e.g. peripheral arterial occlusive disease, commonly known as "intermittent claudication", can lead to a deterioration in the blood supply to the muscles due to vascular constrictions and cause muscle pain during exercise)
Humans have around 650 muscles. Myalgia can cause pain in any muscle. © adimas / Fotolia
Can nutritional disorders also be the cause of muscle pain?
Malnutrition can also be the cause of muscle pain. Minerals, vitamins and proteins are particularly important for healthy muscles. Muscles can ache, especially if there is a lack of magnesium or vitamin D in the body. This is often accompanied by muscle cramps and a feeling of weakness.
A balanced diet and the targeted supplementation of missing vitamins and minerals can be a first step in treatment. A protein-rich diet can also help to treat muscle pain and cramps or prevent them from occurring in the first place. Vegetarians are particularly susceptible here and should make sure they eat a healthy and balanced diet. However, this is not an argument against a vegetarian or vegan diet, as there are plenty of plant-based sources of protein (e.g. pulses, nuts, etc.).
Vitamin D deficiency can promote the development of myalgia © bit24 / Fotolia
The main symptoms are muscle pain, which manifests itself in different ways and can be very diverse. This applies not only to the location of the pain, but also to the type and duration of the pain. Depending on the location, doctors therefore differentiate between
- localized muscle pain, which only occurs in a specific part of the body, and
- diffuse myalgia, which can occur inconsistently, i.e. throughout the entire body
Myalgias can occur in different forms of pain. They are often muscle aches and pains.
However, many people also experience the pain in the muscles as
- stabbing
- electrifying or
- burning.
The spectrum of different pain sensations ranges from an unpleasant accompanying pain to unbearable pain. The latter cannot be alleviated with conventional painkillers.
The muscle pain can
- only occur during exertion or
- be constantly noticeable, even at rest.
What additional symptoms are typical of myalgia?
Occasionally, myalgia is accompanied by these symptoms :
- Cramps
- tiredness
- dizziness
- unsteady gait
- paralysis
- Weakness and muscle atrophy
However, these additional problems and complaints indicate a systemic cause of the muscle pain, not a disease originating in the muscle.
As explained in detail above, muscle pain can have many causes. A thorough and comprehensive diagnosis is therefore very important, especially if the myalgia is severe or long-lasting.
The following examinations are part of the diagnosis of myalgia:
- Taking a medical history (anamnesis)
- Physical examination
- Blood tests (laboratory diagnostics)
- Ultrasound (sonography)
- X-ray examination (in case of suspicion or to rule out bony injuries)
- Further diagnostics(magnetic resonance imaging or computer tomography, angiography, etc.)
- Taking tissue samples (muscle biopsy)
Why is the medical history (anamnesis) so important?
The most important medical task at the beginning and as part of the diagnostic process is to take the patient's medical history. Specific events and previous illnesses can indicate the type of muscle disease.
For example, years of tobacco consumption, several heart attacks or a stroke are already suspicious of damage to the blood vessels and should make you think of "intermittent claudication". Immune system disorders in the patient's own history or in family members may indicate a rheumatic disease.
Taking medication containing cortisone to treat rheumatism can also cause muscle pain or indicate the underlying immunological disease. It is therefore advisable to bring a current medication schedule with you to the examination.
What happens during the physical examination?
After a detailed medical history has been taken, a thorough physical examination follows. The external shape of the skeletal system is also examined before the muscles are palpated. The texture and color of the skin are also important and often indicative. Bruising, for example, can indicate accidents, violence or coagulation disorders.
During the subsequent examination of the muscles, it is advisable to start far away from the maximum level of pain and work your way forward slowly. Trigger points in particular should be avoided at first. Most patients can already tell where their main pain point (= trigger point) is at the beginning of the examination and are often afraid that the examination will start there. You should therefore tell the doctor where it hurts most and ask them not to start here.
You should also report diffuse pain that does not occur at a single point. This can be an important indication of a systemic illness as the cause of the muscle pain.
Why is the blood test important?
A blood count is indicated for further diagnosis. In particular, an increase in the number of white blood cells (leukocytes) is important and indicative in this context. Attention should also be paid to any reduced levels of red blood pigment or red blood cells (erythrocytes) during the evaluation. A drop in the red blood pigment (anemia) can indicate bleeding into the muscles, but also other diseases, e.g. bone marrow damage or tumor disease.
If metabolic or underlying diseases are suspected, other laboratory parameters are checked, such as
- blood sugar levels
- thyroid values
- kidney values
- liver values
- coagulation values
- an examination for bacteria, viruses or parasites or
- immunological factors.
Is a tissue sample always necessary?
A muscle tissue sample (biopsy) is a so-called invasive diagnostic procedure in which the "integrity" of the body is interfered with. This examination is therefore only indicated and justified in cases where a clear diagnosis cannot be made using non-invasive measures. In the majority of cases, however, a biopsy is not necessary and the diagnosis can be made on the basis of physical examination and imaging.
If the muscle pain is caused by muscle soreness , it is usually sufficient to
- a short regeneration break
- light endurance training or
- reducing the intensity of the training.
Applying pain-relieving, circulation-promoting and cooling ointments (e.g. with herbal extracts and camphor) can also be beneficial.
If rest, cooling and the application of ointments are not enough, massage can be a further component in the treatment of muscle pain. With trigger points, the pain is transmitted via the shortened muscle bundle when pressure is applied. Targeted massage can resolve these trigger points.
The video shows this principle:
When should muscle pain be treated by a doctor?
You should seek medical treatment if the muscle pain
- occurssuddenly (acutely) and without an accident
- persists for several weeks
- feels unusual or very severe and
- are accompanied byother symptoms (nausea, fatigue, fever)
Serious injuries, such as a torn muscle fiber, should be treated specifically. Here too, immobilization is usually necessary, and only rarely surgical treatment. Nevertheless, it is important to exclude concomitant diseases (especially bone fractures) through targeted diagnostics.
The medical treatment of muscle pain depends on the respective causes. It is therefore important to recognize the triggers for painful muscles.
- Postural damage usually requires muscle-relaxing medication(muscle relaxants) andphysiotherapy. This allows the affected parts of the body to be loosened, mobilized and strengthened.
- In the case of autoimmune diseases, medication such as cortisone or non-steroidalanti-inflammatory drugs (painkillers, e.g. known as Voltaren®) are often prescribed.
- Doctors usually fight infections with antibiotics
A healthy lifestyle can also help to prevent chronic illnesses. It is therefore worth eating a balanced diet, drinking enough and exercising. Harmful stimulants should be avoided. But even if an illness is already present, a healthy lifestyle can help to alleviate symptoms.