Factores que promueven la persistencia de mialgia en el síndrome de dolor miofascial y en la fibromialgia

There are many causes of muscle pain that must be considered in the differential diagnosis of myofascial pain syndromes (MPS) and fibromyalgia syndrome (FMS). MPS and FMS are not final diagnoses in themselves, but are syndromes with causes. Untreated underlying causes of myalgia can explain why muscle pain occurred, and why it persists. Causes include mechanical abnormalities such as pelvic and spinal dysfunction, and ergonomic and postural stresses. Systemic medical illnesses also cause myalgia. Included in this category are hormonal disorders like hypothyroidism, nutritional disorders like iron and vitamin deficiencies, and infectious illnesses like Lyme disease and parasitic infestation. Connective tissue diseases like Lupus are relevant. Finally, visceral organs have a muscular pain referral that produces characteristic MPS. Identification and treatment of these conditions improves the outcome of treatment of MPS and FMS.