
Fibromyalgia is a chronic medical condition that causes fatigue and widespread pain throughout the body. The exact cause of fibromyalgia is unknown, but it is believed to involve a combination of genetic, environmental, and psychological factors. One of the most common symptoms of fibromyalgia is muscle spasms, which can be painful and disruptive, adding to the discomfort for those already dealing with the condition. These spasms can be characterised as involuntary muscle contractions that can grip the muscles with intense pain. While the exact cause of muscle spasms from fibromyalgia is not fully understood, several factors may contribute to their development, including chronic muscle tension and stiffness, which are characteristic features of the condition. Additionally, reduced physical activity and deconditioning of muscles can increase the risk of muscle spasms. Many people with fibromyalgia report experiencing muscle twitching and buzzing or vibrating sensations in their legs, which can be managed through medication and lifestyle changes.
| Characteristics | Values |
|---|---|
| Muscle spasms | Can be painful and disruptive, and are characterised by muscles that constrict and fail to relax. |
| Muscle cramps | Sudden, involuntary contractions that can cause intense pain. |
| Muscle twitches | Quick, spontaneous contractions that affect small groups of muscle fibres, usually without causing limb movement. |
| Pain | Widespread pain throughout the body, including muscles, tendons, and ligaments. |
| Fatigue | People with fibromyalgia often experience fatigue and sleep disturbances. |
| Cognitive difficulties | Also known as "fibro fog", this includes difficulty with focus, memory, and conversation. |
| Heightened pain sensitivity | People with fibromyalgia may experience pain more intensely than those without the condition due to abnormal processing of pain signals in the brain. |
| Nerve dysfunction | Symptoms such as tingling, numbness, and burning sensations may be related to nerve dysfunction. |
| Muscle stiffness and tension | Can lead to muscle fatigue, which can increase the risk of muscle spasms. |
| Treatment | Medication, exercise, stress management, and healthy habits may help ease symptoms. |
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What You'll Learn

Muscle twitching and buzzing sensations in the legs
Fibromyalgia is a chronic disorder that affects the central nervous system, causing widespread pain and heightened sensitivity to pain signals. This dysfunction can be likened to a misfiring circuit, where the normal pathways of communication within the nervous system become jumbled. This may result in involuntary twitching or spastic movements. The primary cause of fibromyalgia symptoms is believed to be a disordered state of the central nervous system, leading to an amplified painful response. Overactive nerves in the central nervous system can also cause muscles to remain in a constant state of contraction, resulting in spasms and cramping.
Myofascial trigger points (TrPs) are another factor that may contribute to muscle twitching and buzzing sensations in the legs. TrPs are dense knots that can form in soft tissue following an injury, overuse, or poor posture. They are common in people with fibromyalgia and can cause referred pain, which is pain felt in another area of the body. For example, a TrP on the muscle running up the side of the neck can cause pain on the top of the head as well as sinus pain under the eyes. TrPs have also been found to cause muscle spasms, which are different from muscle twitches as they are longer-lasting and often painful.
Managing fibromyalgia and associated muscle twitching and buzzing sensations in the legs involves a multifaceted approach. While there is no cure for fibromyalgia, a combination of medication, exercise, stress management, and healthy habits may help ease symptoms. Doctors may prescribe pain relievers, antidepressants, muscle relaxers, anti-seizure medications, and drugs to aid sleep. Over-the-counter pain relievers such as acetaminophen may also be helpful. Regular moderate exercise, such as yoga, tai chi, Pilates, or walking, can help to build endurance, stretch and strengthen muscles, and improve mobility. Additionally, complementary therapies such as massage, acupuncture, and chiropractic manipulation can ease aches and stress.
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Muscle cramps and involuntary contractions
Fibromyalgia is a complex condition characterised by widespread pain, fatigue, and other discomforting symptoms. While the exact cause of fibromyalgia is not known, it is believed to involve a combination of genetic, environmental, and psychological factors. The pain associated with fibromyalgia is thought to be due to abnormal processing of pain signals in the brain, causing those with the condition to experience pain more intensely than those without it.
The connection between fibromyalgia and muscle spasms is not entirely understood, but several theories may explain their coexistence. One theory suggests that the abnormal pain processing in fibromyalgia may also affect the nerves that control muscle contractions. Overactive nerves in the central nervous system can cause muscles to remain in a state of constant contraction, leading to spasms and cramping. Additionally, reduced physical activity and deconditioning of muscles can increase the risk of muscle spasms, and the chronic pain associated with fibromyalgia may cause individuals to hold their muscles in a tense position, further contributing to the development of spasms.
Managing fibromyalgia and associated muscle cramps and involuntary contractions involves a multifaceted approach. Doctors may prescribe pain relievers, antidepressants, muscle relaxers, anti-seizure medications, and drugs to aid sleep. Complementary therapies such as massage, acupuncture, and chiropractic manipulation can also help ease aches and stress. Prioritising sleep quality is essential, and gentle, low-impact movement can increase muscle endurance, improve flexibility, and elevate overall energy levels.
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Managing fibromyalgia: lifestyle changes and sleep
Fibromyalgia is a condition that affects around 4 million US adults, and is characterised by widespread pain, fatigue, and a host of other symptoms that can make daily life challenging. While the exact cause of fibromyalgia remains unclear, it is believed to involve a combination of genetic, environmental, and psychological factors. The pain associated with fibromyalgia is thought to be due to abnormal processing of pain signals in the brain, which can lead to heightened pain sensitivity.
Lifestyle Changes
- Regular exercise: Low-impact activities such as walking, swimming, yoga, tai chi, and Pilates can help to build muscle endurance, improve flexibility, and increase overall energy levels. Aim for 20-30 minutes, 2-3 days per week.
- Manage stress: Mind-body practices such as tai chi, qi gong, and yoga can help to ease sleep problems, fatigue, and mood by combining movement with stress relief through focused breathing.
- Healthy diet: Focus on nutrient-rich foods to increase energy levels and avoid other health problems. People with fibromyalgia tend to have low levels of vitamin D, so consider getting a blood test and taking supplements if necessary.
- Avoid caffeine and alcohol: Caffeine and alcohol can disrupt sleep and affect sleep quality, so it is recommended to limit caffeine-containing beverages to the morning and avoid heavy alcohol consumption.
- Quit smoking: Tobacco is a natural stimulant that can disrupt sleep, so people with fibromyalgia are advised to quit smoking.
Sleep
- Set a sleep schedule: Go to bed and wake up at the same time each day, even on weekends, to ensure adequate rest and allow time for physical and mental repair.
- Avoid daytime napping: Long naps during the day can interfere with nighttime sleep, so try to avoid them if possible.
- Wind-down routine: Set aside time before bed to relax without using electronic devices. Listening to relaxation tapes, reading, or taking a warm bath can help prepare the body and mind for sleep.
- Treat sleep disorders: Restless legs syndrome and sleep apnea are more common in people with fibromyalgia and can disrupt sleep. Certain medications and treatments can help relieve these conditions and improve sleep quality.
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Treatment: medication, exercise, and therapy
While there is no cure for fibromyalgia, a combination of medication, exercise, and therapy can help manage the symptoms and improve quality of life.
Medication
Depending on the symptoms, a doctor may prescribe pain relievers, antidepressants, muscle relaxers, anti-seizure medicines, and drugs to aid sleep. Over-the-counter pain relievers like acetaminophen may also help, but stronger pain medicines like opioids are best avoided as they can make symptoms worse. Some patients have also found success with supplements, such as potassium, and drinking tonic water.
Exercise
Regular, moderate exercise is key to controlling fibromyalgia. Low-impact activities like yoga, tai chi, Pilates, and walking can help build endurance, stretch and strengthen muscles, and improve movement. Exercise also releases endorphins, which can help fight pain, stress, and low mood, and improve sleep.
Therapy
Complementary therapies such as massage, acupuncture, and chiropractic manipulation can help ease aches and stress. Counselling or therapy can also help patients deal with difficult emotions and the impact the condition has on their mental health.
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The underlying causes of fibromyalgia
Fibromyalgia is a chronic disorder characterised by widespread pain and tenderness in the body. It is often accompanied by fatigue, sleep disturbances, cognitive difficulties, and heightened pain sensitivity. While the exact cause of fibromyalgia remains unclear, several underlying factors are believed to contribute to its development.
One of the main theories suggests that fibromyalgia is associated with changes in the way the central nervous system processes pain messages. This involves the brain, spinal cord, and nerves, which transmit information throughout the body. Specifically, brain imaging studies have revealed altered signalling in neural pathways that transmit and receive pain signals in people with fibromyalgia. This abnormal processing of pain signals in the brain results in increased sensitivity to pain, causing individuals with fibromyalgia to experience pain more intensely than those without the condition.
Genetic factors also play a role in the development of fibromyalgia. It tends to run in families, and certain genes may increase the likelihood of an individual developing the condition. However, it is important to note that fibromyalgia can also occur in people without a family history of the disorder. Environmental and psychological factors are believed to contribute as well, with emotional or physical stress often triggering the onset of symptoms.
Additionally, fibromyalgia is often associated with other medical conditions, particularly rheumatic diseases, mood disorders, and conditions that cause pain. These include rheumatoid arthritis, lupus, osteoarthritis, irritable bowel syndrome, and depression. The presence of these comorbidities can further increase the risk of developing fibromyalgia.
While the underlying causes of fibromyalgia are not yet fully understood, a combination of medication, exercise, stress management, and healthy habits can help manage symptoms and improve quality of life.
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Frequently asked questions
Yes, fibromyalgia can cause muscle twitching, which is usually referred to as fasciculation. It can also cause muscle spasms, cramps, and contractions. These symptoms can be painful and disruptive, adding to the discomfort of those already dealing with fibromyalgia.
There are several ways to manage fibromyalgia and muscle twitching, including:
- Regular, moderate exercise, such as yoga, tai chi, Pilates, and walking.
- Complementary therapies like massage, acupuncture, and chiropractic manipulation.
- Counselling or therapy to help deal with difficult emotions.
- Prioritising sleep quality by avoiding stimulants like caffeine and alcohol before bed, minimising daytime napping, and maintaining a consistent sleep schedule.
- Working with a healthcare professional to develop a personalised treatment plan, which may include medication.
The exact cause of muscle twitching in people with fibromyalgia is not fully understood, but several factors may contribute to their development, including:
- Overactive nerves in the central nervous system, causing muscles to remain in a state of constant contraction.
- Reduced physical activity and deconditioning of muscles.
- Weakness and fatigue, leading to increased muscle tension and susceptibility to spasms.
- Muscle fatigue and tension, which can lead to muscle spasms as muscles may not be able to relax fully after contracting.
- Chronic pain and discomfort associated with fibromyalgia, causing people to hold their muscles in a tense position for extended periods.
Yes, in addition to muscle twitching and pain, people with fibromyalgia may experience:
- Fatigue
- Sleep disturbances
- Cognitive difficulties ("fibro fog")
- Heightened pain sensitivity
- Numbness
- Tingling
- Burning sensations
- Paresthesia (a prickling, tingling, burning, and/or numbing sensation)

























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