Symptoms and diagnosis of the back in mice.


Mice on the back is a colloquial term used to describe painful bumps on and around the hips, sacrum, and lower back. It is not a medical term, but people apply it to many different conditions in which a fatty tumor appears around the back and spine.

This term is used more by chiropractors than by healthcare providers. Some argue that the lack of specificity of the description can lead to misdiagnosis and inappropriate treatment if the underlying causes are not adequately investigated.

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Dorsal mice were first described in medical literature in 1937, when a medical professional named Emil Reis used the term in connection with a condition called episacroiliac lipoma.

Since then, several other conditions have been associated with dorsal mice, including iliac crest pain syndrome, divided triangle syndrome, lumbosacral fat hernia, and lumbosacral hernia.

Mice on the back is the term used to describe painful masses of fat that protrude (hernia) through the lumbar fascia that covers the deep muscles of the lower and middle back.


These fatty masses generally have a firm elasticity. You can find them both in the hip bones and in the sacroiliac region. Dorsal mice move under the skin and are often encountered by chiropractors and massage therapists during routine treatment .

In addition to being ugly, prone mice can often cause excruciating pain, most often associated with an underlying fascial injury and / or pressure on nerve endings. They are usually painful to touch and can cause excruciating pain while sitting in a chair or lying on your back. Lasted.


Due to their lack of specificity, it is often hypothesized that mice on their back inject a local anesthetic into the tumor . It is believed that if the pain goes away, the swelling is most likely the back of a mouse. This is a troublesome way to make a diagnosis, as the use of a local anesthetic inherently reduces nervous sensation and therefore pain.

A chiropractor should never diagnose abnormal fat growth. Rather, it should be examined by a qualified dermatologist or healthcare professional who can perform imaging studies and biopsies if necessary.

Body fat can be very different, severe or not. The same goes for nerve pain. While lipoma is the most obvious explanation, others include:

  • Sebaceous cysts : a benign fluid-filled capsule within the skin between the dermal and epidermal layers of the skin.
  • Subcutaneous abscess – hardening of the pus under the skin, often painful, but not always red or inflamed in the early stages.
  • Sciatica – Radiating nerve pain that runs down one or both legs, caused by a herniated disc or bone spur in the lower back.
  • Liposarcoma : malignant tumors that sometimes appear as intramuscular fatty masses.

Painful lipomas are also associated with fibromyalgia , a condition that requires treatment by a qualified rheumatologist.

Lipomas in the lumbar area.

DermNet / CC BY-NC-ND

Watch out

If there is no uncontrollable pain, the mouse's back generally does not require treatment. This, of course, assumes that the neoplasm is benign and has been correctly diagnosed as such.

If surgery is indicated, it will involve excision of the mice followed by restoration of the fascia. This procedure appears to be the only way to achieve permanent pain relief .

The problem is that some people have hundreds of mice, which makes it less likely that they will be completely eliminated. If the back of the mouse is smaller, wider, and more fluid, liposuction can also be investigated.

Complications from excision surgery include scarring, bruising, uneven skin texture, and infections. Call your doctor if you have a fever, chills, nausea, worsening pain, bleeding, or discharge after the procedure.

Complementary and alternative treatment (CAM)

Many chiropractors believe that back mice can be successfully treated with a combination of acupuncture and spinal manipulation. It is definitely a less invasive treatment and is unlikely to cause harm.

A 2016 study published in the journal Pain Healthcare reported that injection of local anesthetics or steroids into the nodules followed by dry acupuncture (an alternative therapy similar to acupuncture) improved pain relief. The study findings are limited to the fact that only one topic was studied.

Frequently asked questions

  • There is no single treatment for mice on the back, as it is a universal term for a number of conditions associated with painful bumps on the back. However, benign lesions that do not cause pain or interfere with mobility can be left alone. Otherwise, drug and / or steroid injections can help.

  • If this does not cause pain or makes movement difficult, there is no reason to remove the lipoma as these are benign growths. If a back lipoma is bothersome, it can be removed (surgically removed).

  • One cause, known as a subfascial fatty hernia, occurs when fat is released through a tear or hole in the fascia , the thin layer of connective tissue that covers muscles, organs, and other structures throughout the body, in part lower back.

  • Usually not. They tend to be tough and tough and can move under the skin if gently pushed.

  • If you know for sure that a lump on your back is an episacral lipoma, your therapist may refer you to an orthopedic surgeon or orthopedic surgeon to determine if it is best treated and what is the best way to treat it. You can also get pain relief from a certified massage therapist who is familiar with the condition.

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