Coal, oil and natural gas are three main types of fossil fuels. Fossils fuels are combustible materials that are formed over millions of years by the decomposition of plant and animal life. Continue Reading.
Some of the possible common medical causes of Extremity pain may include: 1  Brachial plexus lesions. 2  Carpel tunnel syndrome. 3  Biceps tendonitis.  Raynauds 1  phenomenon. Sickle cell anemia.  Black widow spider 1  bites. Polyneuropathy.  Cat scratch 1  disease. Post herpetic neuralgia.  Erythema nodosum.
Patients with severe pain in the lower extremity often develop problems with either the lower back (lumbar spine) or SI joints. Usually, if the underlying problem is treated, the associated lumbar spine or SI joint dysfunction will also improve. There are many disorders that affect the joints of the body that can also cause inflammation in the SI joints.