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.
Scheuermannâs disease can cause pain, stiffness, and muscle spasms in the upper back. Learn more: Scheuermann's Disease of the Thoracic and Lumbar Spine. Less Common Causes of Upper Back Pain. Some of the less common causes of upper back pain include: Thoracic herniated disc.