science

Myofascial pain syndrome

Myofascial pain syndrome is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Myofascial pain syndrome rather than just read about it. In short: Myofascial pain syndrome (MPS), also known as chronic myofascial pain (CMP), is a syndrome characterized by chronic pain in multiple myofascial trigger points ("knots") and fascial (connective tissue) constrictions. It can appear in any body part.

Key takeaways

Myofascial pain syndrome belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Myofascial pain syndrome to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Myofascial pain syndrome from memory before moving on to harder problems.

Reference excerpt

Myofascial pain syndrome (MPS), also known as chronic myofascial pain (CMP), is a syndrome characterized by chronic pain in multiple myofascial trigger points ("knots") and fascial (connective tissue) constrictions. It can appear in any body part. Symptoms of a myofascial trigger point include: focal point tenderness, reproduction of pain upon trigger point palpation, hardening of the muscle upon trigger point palpation, pseudo-weakness of the involved muscle, referred pain, and limited range of motion following approximately 5 seconds of sustained trigger point pressure. The cause is believed to be muscle tension or spasms within the affected musculature. However, emerging evidence suggests that fascial tissue and its biomechanical and neurophysiological properties may also contribute to the development and persistence of myofascial pain. Diagnosis is based on the symptoms and possible sleep studies. Treatment may include pain medication, physical therapy, mouth guards, and occasionally benzodiazepine. It is a relatively common cause of temporomandibular pain.

Signs and symptoms Primary symptoms include:

Localized muscle pain Trigger points that activate the pain (MTrPs) Generally speaking, the muscular pain is steady, aching, and deep. Depending on the case and location the intensity can range from mild discomfort to excruciating and "lightning-like". Knots may be visible or felt beneath the skin. The pain does not resolve on its own, even after typical first-aid self-care such as ice, heat, and rest. Electromyography (EMG) has been used to identify abnormal motor neuron activity in the affected region. A physical exam usually reveals palpable trigger points in affected muscles and taut bands corresponding to the contracted muscles. The trigger points are exquisitely tender spots on the taut bands.

Causes The causes of MPS are not fully documented or understood. At least one study rules out trigger points: "The theory of myofascial pain syndrome (MPS) caused by trigger points (TrPs) ... has been refuted. This is not to deny the existence of the clinical phenomena themselves, for which scientifically sound and logically plausible explanations based on known neurophysiological phenomena can be advanced." Some systemic diseases, such as connective tissue disease, can cause MPS. Poor posture and emotional disturbance might also instigate or contribute to MPS.

Diagnosis Diagnosis is generally based on the symptoms and possible sleep studies.

Comparison with fibromyalgia Myofascial pain syndrome (MPS) is commonly confused with fibromyalgia (FM) as their presentation is similar. However, fibromyalgia is typically associated with fatigue, depression and cognitive dysfunction. The anatomic distribution and characteristic of the pain also differ. While the fibromyalgia pain is generalized, bilateral and typically involving muscles above and below the waist, the MPS pain affects a particular region of the body such as the mandible or the shoulders. The MTrPs found in MPS present overt palpable nodular structures within the muscle, while aside from tenderness, the trigger points in FM are indistinguishable from surrounding tissue.

However, there are some challenges distinguishing these syndromes:

Difficulty differentiating FM trigger points from myofascial trigger points Poor reliability in detecting taut bands MPS may become generalized over time thus mimicking FM

Treatment Massage therapy using trigger-point release techniques may be effective in short-term pain relief. Physical therapy involving gentle stretching and exercise may be useful for recovering full range of motion and motor coordination. Once the trigger points are gone, muscle strengthening exercise can begin, supporting long-term health of the local muscle system. Myofascial release, which involves gentle fascia manipulation and massage, may improve or remediate the condition. A systematic review concluded that dry needling for the treatment of myofascial pain syndrome in the lower back appeared to be a useful adjunct to standard therapies, but that clear recommendations could not be made because the published studies were small and of low quality. Posture evaluation and ergonomics may provide relief in the early stages of treatment. Gentle, sustained stretching exercises within a comfortable range of motion have been shown to lessen symptoms. Regular, non-intense activity is also encouraged.

References

Sources Starlanyl DJ, Copeland ME (2001). Fibromyalgia & Chronic Myofascial Pain: A Survival Manual (2nd ed.). Oakland, CA: New Harbinger Publications. ISBN 978-1-57224-238-8.

External links

Worked examples

Example 1 — a first encounter with Myofascial pain syndrome

Start with the simplest possible case. Write down what Myofascial pain syndrome claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Myofascial pain syndrome before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Myofascial pain syndrome ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Myofascial pain syndrome

In research: Myofascial pain syndrome appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Myofascial pain syndrome in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Myofascial pain syndrome is common in secondary-school and first-year university syllabi. It links to neighbouring topics Chronic pain syndromes, Disorders of fascia, Pain, so understanding it makes those chapters shorter.
In everyday life: Look for Myofascial pain syndrome outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Myofascial pain syndrome in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Myofascial pain syndrome means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Myofascial pain syndrome out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Myofascial pain syndrome in simple terms?

Why does Myofascial pain syndrome matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Myofascial pain syndrome?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Myofascial pain syndrome.