Back Pain Type - Miscellaneous

Miscellaneous back pain type is a catchall category of relatively rare or unusual back disorders. Miscellaneous types of back pain may be associated with infection, inflammatory disease, tumors (metastatic cancer), joint dysfunction, connective tissue disorders, and inflammatory disease. Ankylosing Spondylitis, for example, is an inflammatory disease that affects the vertebral bones, and is included in the miscellaneous category. Miscellaneous causes of low back pain (dorsalgia) include:
  • Automobile accidents
  • Abdominal aortic aneurysm
  • Ankylosing spondylitis
  • Fibromyalgia
  • Functional Disorders
  • Osteoporosis
  • Piriformis syndrome
  • Pregnancy related back pain
  • Rheumatoid arthritis
  • Sacroiliac joint dysfunction
  • Tumors
  • Visceral Disorders
In rare cases, a patient may suddenly experience acute lower back pain because of a sudden enlargement of the abdominal aorta. The abdominal aorta is the largest artery in the abdomen that circulates oxygenated blood to the visceral organs of the abdominal cavity. Due to very high blood pressure or blockage of the abdominal aorta, blood may begin to swell in the artery and possibly towards the point of rupture (abdominal aortic aneurysm). The result of the aneurysm may be back pain and a possibly life threatening condition. If an aortic aneurysm is suspected, the person should seek immediate medical attention.



Functional disorders refer to back pain symptoms that arise as a result of anxiety or other psychological problem. Functional disorders will usually be diagnosed after all anatomical or immunological problems have been rules out and the patient has evaluated for back pain related to a psychological problem. Patients with functional disorders may have moderate to severe lower back pain as well as complaints of fatigue and daytime sleepiness. A physician who suspects a functional disorder will evaluate them for work related or personal problems, and their emotional state. Signs of functional disorders would include a peculiar reaction to treatment and flat affect.

Piriformis Syndrome is a neuromuscular disorder caused by irritation of the piriformis muscle that that causes structural changes to the muscle which causes it to compress the sciatic nerve. Once the piriformis muscle is irritated, it presses on the sciatic nerve, causing numbness and tingling, beginning in the buttocks, and running down the length of one leg. Treatment of piriformis syndrome includes medications to reduce inflammation and irritation, as well as exercise therapy to strengthen the core muscles and hamstrings. Patients with piriformis syndrome may also experience relief with cold therapy (ice packs).

Rheumatoid Arthritis is an autoimmune disease in which the body's immune system fails to recognize its own tissues as safe and familiar and begins to attack its own healthy tissues. Rheumatoid Arthritis usually involves the body's own immune system attacking soft tissues and joints. One of the common signs of rheumatoid arthritis are degenerative changes to joints not normally associated with load bearing. Someone with rheumatoid arthritis is more likely to have degenerative changes to joints in their hands, fingers, and feet then someone with osteoarthritis. Treatments for osteoarthritis include non-impact exercises that increase flexibility and range of motion, and oral steroids to reduce inflammation of affected joints.