The sciatic nerve is the largest and longest nerve in the body. Formed by a bundle of nerves in the lumbar spine, the nerve exits the spinal column at the lower back, runs through the hip and down the back of the leg to the sole of the foot.

Ulnar nerve pain can make it difficult to do the simplest activities. Pain in the hand and fingers can make life pretty unpleasant. The ulnar nerve branches off from the brachial plexus and runs down through the forearm and into the hand, innervating the ring and pinky fingers.

Your abdominal organs are separated by protective coatings that keep your organs in place and support moving and twisting in your body. After abdominal surgery, however, scarring known as adhesions can form in your abdominal cavity, causing pain in the pelvis or abdomen.

While exercising, your muscles feel weak, painful and tired. This is muscle fatigue, and it can be caused by a variety of physical, environmental, biochemical and nutritional factors. Writing in the December 1998 issue of the "European Journal of Applied Physiology"

Although both high and low calcium levels in the blood can cause muscle symptoms, low levels are typically the culprit behind muscle cramping. Low serum calcium levels, medically termed hypocalcemia, or high calcium levels, called hypercalcemia, most often are related to causes other than dietary intake.

Professional drivers and motorcyclists can suffer from Guyon's canal syndrome, which often occurs due to vibration from the road. Similar to carpal tunnel syndrome, Guyon's canal stems from compression of a nerve in your arm. You might feel pain or numbness in the outside of your palm or in your ring and pinky fingers.

A common treatment strategy for pulled ligaments is known as RICE: rest, ice, compression and elevation.

The calf muscle is located on the back bottom part of the leg. There are many reasons you can develop calf pain. They can occur due to nighttime cramps, from a torn or pulled muscle or be a signal of a circulatory problem. The first step is to have your calf pain evaluated by your doctor to rule out serious conditions.

The plantar fascia is a thick fibrous band of connective tissue that originates at the heel bone and runs the entire length of the sole. It helps maintain the arch system of the foot and plays a role in your balance and phases of your gait.

Dowager’s hump, or kyphosis, describes a condition in which there is an abnormality in the curve of the spine. Kyphosis is specifically the extreme curvature of the spinal column in the chest. The excessive curvature causes the formation of a hump on the back and shoulders of the affected patient.

A bit of muscle soreness following exercise is normal and results from pushing yourself beyond your normal levels during a workout. Typical muscle pain results from small tears that occur in muscle tissue during exercise.

A subluxation is a slight dislocation or misalignment of a bone. Your ribs normally move in a smooth gliding motion, but a subluxation can make the joint jam and cause pain that is so severe you can hardly breathe. Surrounding muscles may go into spasm and the pain may be aggravated by movement or even breathing.