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Myalgia
Other names	Muscle pain, muscle ache
One of the myalgic symptoms
Specialty	Rheumatology

Myalgia or muscle pain is a painful sensation evolving from muscle tissue. It is a symptom of many diseases. The most common cause of acute myalgia is the overuse of a muscle or group of muscles; another likely cause is viral infection, especially when there has been no injury.

Long-lasting myalgia can be caused by metabolic myopathy, some nutritional deficiencies, ME/CFS, fibromyalgia, and amplified musculoskeletal pain syndrome.

Causes

The most common causes of myalgia are overuse, injury, and strain. Myalgia might also be caused by allergies, diseases, medications, or as a response to a vaccination. Dehydration at times results in muscle pain as well, especially for people involved in extensive physical activities such as workout.

Muscle pain is also a common symptom in a variety of diseases, including infectious diseases, such as influenza, muscle abscesses, Lyme disease, malaria, trichinosis or poliomyelitis; autoimmune diseases, such as celiac disease, systemic lupus erythematosus, Sjögren's syndrome or polymyositis; gastrointestinal diseases, such as non-celiac gluten sensitivity (which can also occur without digestive symptoms) and inflammatory bowel disease (including Crohn's disease and ulcerative colitis).

The most common causes are:

• Injury or trauma, including sprains, hematoma
• Overuse: using a muscle too much, too often, including protecting a separate injury
• Chronic tension

Muscle pain occurs with:

• Rhabdomyolysis, associated with:
  • Viral
  • Compression injury leading to crush syndrome
  • Drug-related
    • Commonly fibrates and statins
    • Occasionally ACE inhibitors, cocaine, and some retro-viral drugs
  • Severe potassium deficiency
• Fibromyalgia
• Ehlers-Danlos syndrome
• Auto-immune disorders, including:
  • Mixed connective tissue disease
  • Systemic lupus erythematosus
  • Polymyalgia rheumatica
  • Polymyositis
  • Dermatomyositis
  • Multiple sclerosis (this is neurologic pain localised to myotome)
• Infections, including:
  • Influenza
  • Lyme disease
  • Babesiosis
  • Malaria
  • Toxoplasmosis
  • Dengue fever
  • Hemorrhagic fever
  • Muscular abscess
  • Compartment syndrome
  • Polio
  • Rocky Mountain spotted fever
  • Trichinosis (roundworm)
  • Ebola
  • COVID-19
• Other
  • Postorgasmic illness syndrome (POIS)

Overuse

Overuse of a muscle is using it too much, too soon or too often. One example is repetitive strain injury. See also:

• Exercise
• Weight lifting

Injury

The most common causes of myalgia by injury are: sprains and strains.

Autoimmune

• Multiple sclerosis (neurologic pain interpreted as muscular)
• Myositis
• Mixed connective tissue disease
• Lupus erythematosus
• Fibromyalgia syndrome
• Familial Mediterranean fever
• Polyarteritis nodosa
• Devic's disease
• Morphea
• Sarcoidosis

Metabolic defect

• Carnitine palmitoyltransferase II deficiency
• Conn's syndrome
• Adrenal insufficiency
• Hyperthyroidism
• Hypothyroidism
• Diabetes
• Hypogonadism
• Postorgasmic illness syndrome

Other

• Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)
• Channelopathy
• Ehlers Danlos Syndrome
• Stickler Syndrome
• Hypokalemia
• Hypotonia
• Exercise intolerance
• Mastocytosis
• Peripheral neuropathy
• Eosinophilia myalgia syndrome
• Barcoo Fever
• Herpes
• Hemochromatosis
• Delayed onset muscle soreness
• HIV/AIDS
• Generalized anxiety disorder
• Tumor-induced osteomalacia
• Hypovitaminosis D
• Infarction

Withdrawal syndrome from certain drugs

Sudden cessation of high-dose corticosteroids, opioids, barbiturates, benzodiazepines, caffeine, or alcohol can induce myalgia.

Treatment

When the cause of myalgia is unknown, it should be treated symptomatically. Common treatments include heat, rest, paracetamol, NSAIDs, massage, cryotherapy and muscle relaxants.

See also

• Arthralgia
• Myopathy
• Myositis

References

1. ^ "Dolores musculares: MedlinePlus enciclopedia médica". medlineplus.gov (in Spanish). Retrieved 2022-10-28.
2. Vitali, Claudio; Del Papa, Nicoletta (February 2015). "Pain in primary Sjögren's syndrome". Best Practice & Research. Clinical Rheumatology. 29 (1): 63–70. doi:10.1016/j.berh.2015.05.002. ISSN 1532-1770. PMID 26267000.
3. Tovoli, Francesco (2015). "Clinical and diagnostic aspects of gluten related disorders". World Journal of Clinical Cases. 3 (3): 275–284. doi:10.12998/wjcc.v3.i3.275. ISSN 2307-8960. PMC 4360499. PMID 25789300.
4. "Muscle Pain - Causes". Mayo Clinic. Retrieved April 23, 2024.
5. "Muscle aches". MedlinePlus. Retrieved 10 April 2024.
6. "Understanding Myalgia: Causes, Treatments, and Prevention". 8 September 2023.
7. ^ Balon R, Segraves RT, eds. (2005). Handbook of Sexual Dysfunction. Taylor & Francis. ISBN 9780824758264.
8. ^ Wylie KR, ed. (2015). ABC of Sexual Health. John Wiley & Sons. p. 75. ISBN 9781118665565.
9. ^ "Postorgasmic illness syndrome". Genetic and Rare Diseases Information Center (GARD). National Institutes of Health. 2015. Archived from the original on 5 March 2016. Retrieved 30 July 2015.
10. ^ MedlinePlus
11. Glueck, CharlesJ; Conrad, Brandon (2013). "Severe vitamin D deficiency, myopathy, and rhabdomyolysis". North American Journal of Medical Sciences. 5 (8): 494–495. doi:10.4103/1947-2714.117325. ISSN 1947-2714. PMC 3784929. PMID 24083227.
12. Shmerling, Robert H (April 25, 2016). "Approach to the patient with myalgia". UpToDate. Retrieved 2018-05-27.

External links

• Symptoms and signs: Nervous and musculoskeletal systems
• Soft tissue disorders
• Pain