
Endometriosis is a chronic disease that occurs when tissue similar to the uterine lining grows in places it shouldn't, such as the ovaries, fallopian tubes, and bowels. It can cause severe pain during periods, sexual intercourse, bowel movements, and urination, as well as chronic pelvic pain, abdominal bloating, nausea, fatigue, and sometimes depression, anxiety, and infertility. While endometriosis is typically associated with pelvic pain, it can also affect the skeletal muscular system, including the abdominal muscles, pelvic floor muscles, hip muscles, and lumbar muscles. This is known as Extrapelvic endometriosis or Endometriosis of the Skeletal Muscular System (ESMS) and can lead to delayed diagnosis and inappropriate treatment.
| Characteristics | Values |
|---|---|
| Endometriosis | When tissue similar to the uterine lining grows in places where it doesn't belong, such as skeletal muscles and joints |
| Extrapelvic endometriosis occurrence at skeletal muscle and joint sites | Not rare, prone to delayed diagnosis and inappropriate treatment |
| ESMS cases | 78 |
| ESMS included | Abdominal muscles (50.7%), pelvic floor muscles (11.6%), lower limb muscles (11.6%), hip muscles (8.7%), lumbar muscles (7.2%), joints (5.8%), upper limb muscles (2.9%), and shoulder–neck muscles (1.4%) |
| Pain | Severe, life-impacting pain during periods, sexual intercourse, bowel movements and/or urination, chronic pelvic pain, abdominal bloating, nausea, fatigue, and sometimes depression, anxiety, and infertility |
| Treatment | Medication, surgery, or a combination of both |
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What You'll Learn

Endometriosis can cause abdominal muscle pain
Endometriosis is a chronic disease that affects many women worldwide. It occurs when tissue similar to the uterine lining grows in places where it doesn't belong, such as the ovaries, fallopian tubes, and bowels. This can cause severe pain during periods, sexual intercourse, bowel movements, and urination, as well as chronic pelvic pain, abdominal bloating, nausea, fatigue, and sometimes depression, anxiety, and infertility.
While pelvic pain is a well-known symptom of endometriosis, the disease can also impact other areas of the body, including the abdominal muscles. In fact, a systematic review of endometriosis of the skeletal muscular system (ESMS) found that 50.7% of the cases included in the review involved the abdominal muscles. This suggests that endometriosis-related pain is not limited to the pelvis and can extend to the abdominal region as well.
The pain associated with endometriosis can be debilitating and interfere with daily life. It is important to note that endometriosis is often associated with painful periods, and this pain can extend beyond the days of menstruation. Some people with endometriosis experience pain during sex or when using the bathroom, which can be extremely distressing and impact their sexual health and relationships.
Additionally, inflammatory proteins from endometriosis can travel to the bladder and bowels, causing nausea, diarrhea, constipation, and pain with urination. This can occur at any time of the month and is not limited to the menstrual cycle. Endometriosis can also impact fertility, as the inflammation and scar tissue can damage the egg or sperm or interfere with their movement through the fallopian tubes or uterus.
If you or someone you know is experiencing symptoms of endometriosis, it is important to seek medical advice. Early diagnosis and effective treatment are crucial for managing the condition and improving quality of life.
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Pelvic floor muscles can be affected by endometriosis
Endometriosis is a condition in which tissue similar to the uterus lining grows outside the uterus. This can cause painful and heavy periods, pelvic pain, and fertility issues. While not everyone experiences pain with endometriosis, those who do can also experience muscle pain.
Pelvic floor dysfunction (PFD) is a common condition in people with endometriosis, occurring when the muscles forming the pelvic floor tighten in response to chronic pelvic pain. Even after the source of pelvic pain is resolved, PFD can persist as a secondary source of pelvic pain. Pelvic floor spasms can make intercourse impossible and cause pain and difficulty emptying the bladder or bowel. Pelvic floor dysfunction can affect all the organs in the pelvis, including the urinary, genital, and bowel systems, and can impact the body's coordination, alignment, breathing, and mobility.
Pelvic floor exercises, also known as Kegel exercises, can help people with endometriosis. These exercises involve tightening and relaxing the muscles around the vagina, anus, bladder, and urethra. While it is unclear if these exercises directly benefit endometriosis, they may improve pain symptoms and boost core strength and stability. Pelvic floor muscle training can also help with bladder control and sexual function and improve symptoms such as pelvic pain and urinary issues.
Pelvic floor physical therapy can help treat endometriosis and PFD. This involves a patient history, a biomechanical and musculoskeletal assessment, and relaxation techniques like massage. Massage can help loosen and relax muscles and relieve abdominal and pelvic pain. Patients are also taught self-massage and relaxation exercises.
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Endometriosis may cause pain in the lower limb muscles
Endometriosis is a chronic disease that affects many women worldwide. It occurs when tissue similar to the uterine lining grows in places where it doesn't belong, such as the ovaries, fallopian tubes, and bowels. This can cause severe pain during periods, sexual intercourse, bowel movements, and urination, as well as chronic pelvic pain, abdominal bloating, nausea, fatigue, and sometimes depression, anxiety, and infertility. While the exact cause of endometriosis is unknown, it is believed to be influenced by various factors, including retrograde menstruation, immune system disorders, and hormone imbalances.
In addition to the more commonly discussed symptoms, endometriosis can also affect the skeletal muscular system, known as Endometriosis of the Skeletal Muscular System (ESMS). ESMS is not uncommon, but it is often undiagnosed or misdiagnosed. It can affect various muscle groups, including the abdominal muscles, pelvic floor muscles, lower limb muscles, hip muscles, lumbar muscles, and even the shoulder and neck muscles. The age range for patients with ESMS was reported to be between 17 and 49 years, with an average age of 34 years.
A systematic review of the literature on ESMS identified 62 studies with 78 cases of ESMS. Of these cases, 11.6% involved the lower limb muscles. This means that out of the 78 individuals with ESMS, approximately 9 people experienced endometriosis-related pain in their lower limb muscles. This pain can vary in intensity and may be influenced by hormonal fluctuations during the menstrual cycle.
While the exact mechanism of how endometriosis causes lower limb muscle pain is not fully understood, it is believed that inflammatory proteins and hormonal factors may play a role. Endometriosis is known to be influenced by estrogen levels, which can increase inflammation and pain associated with the disease. This may contribute to the pain experienced in the lower limb muscles, as well as other affected areas. However, more research is needed to fully understand the connection between endometriosis and muscle pain.
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Hip muscles can be impacted by endometriosis
Endometriosis occurs when tissue similar to the uterine lining grows in places where it shouldn't, such as the ovaries, fallopian tubes, and bowels. This condition can cause pelvic pain and heavy periods, as well as fertility issues. While endometriosis is commonly associated with pelvic pain, it can also impact the hip muscles and surrounding areas, leading to discomfort and impaired function.
Endometriosis lesions can develop in the hip area or the nerves and muscles surrounding the hip, directly invading and causing pain and dysfunction. The pelvis contains complex nerves, including the sciatic nerve, obturator nerve, femoral nerve, and pudendal nerve. When these nerves become inflamed, damaged, or irritated due to endometriosis, they can result in neuropathic pain. This pain can manifest as sharp or stabbing sensations and can radiate to other areas, such as the buttocks or legs.
Additionally, endometriosis can cause increased production of cytokines and prostaglandins, which negatively affect the nervous system. This increase in inflammatory molecules can irritate nerves, amplifying pain sensations. The impact of endometriosis on the nervous system can lead to heightened sensitivity, causing even minor stimuli to trigger significant pain responses.
The obturator internus (OI) muscle, one of the six hip rotator muscles, attaches the hip to the pelvis through the pelvic floor. Endometriosis-related inflammation and lesions in this area can irritate the OI muscle and surrounding nerves and ligaments, resulting in hip pain. This pain can radiate to the groin or lower back, affecting a wide area.
It is important to note that hip pain may have various causes, and a thorough evaluation by a pelvic pain specialist is crucial for an accurate diagnosis. Treatment options for endometriosis-related hip pain include conservative measures such as changing positions, exercising, cold therapy, and topical medications to reduce inflammation and manage pain.
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Endometriosis can cause lumbar muscle pain
Endometriosis is a chronic disease that affects people who menstruate. It occurs when tissue similar to the uterine lining grows in places it shouldn't, such as the ovaries, fallopian tubes, and bowels. This can cause severe pain during periods, sexual intercourse, bowel movements, and urination, as well as chronic pelvic pain, abdominal bloating, nausea, fatigue, and sometimes depression, anxiety, and infertility.
While pelvic pain is a well-known symptom of endometriosis, the disease can also cause muscle pain. Extrapelvic endometriosis, or endometriosis of the skeletal muscular system (ESMS), occurs when endometrial tissue grows in skeletal muscles and joints outside the pelvis. This can include the abdominal muscles, pelvic floor muscles, lower limb muscles, hip muscles, and lumbar muscles.
Lumbar muscles, which are located in the lower back, are affected by endometriosis in about 7.2% of ESMS cases. The average age of patients with ESMS is 34 years, with a range of 17 to 49 years. Notably, a high percentage of patients with ESMS, approximately 63.8% have a history of pelvic surgery, and 76.8% of local symptoms are related to the menstrual cycle.
The presence of endometrial tissue in the lumbar muscles can cause pain and discomfort in the lower back region. This pain may be chronic and persistent, impacting daily activities and quality of life. It is important for individuals experiencing such symptoms to seek medical advice and undergo appropriate diagnostic evaluations to determine the presence of endometriosis and receive timely treatment.
In conclusion, endometriosis can indeed cause lumbar muscle pain, and this aspect of the disease should not be overlooked. Early diagnosis and effective treatment are crucial to managing the condition and improving the well-being of individuals suffering from endometriosis-related muscle pain.
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Frequently asked questions
Endometriosis is a chronic disease in which tissue similar to the lining of the uterus grows outside the uterus.
Extrapelvic endometriosis occurring at skeletal muscle and joint sites is not rare. Endometriosis of the skeletal muscular system (ESMS) has been found in abdominal muscles, pelvic floor muscles, hip muscles, and lumbar muscles.
Other symptoms of endometriosis include painful periods, pelvic pain, pain during sex or when using the bathroom, nausea, fatigue, and infertility.










































