The tailbone or coccyx is the small bone located at the bottom of the spine. Certain types of trauma or injuries, such as giving birth to a baby or sitting or falling down hard, can bruise or break the tailbone, leading to uncomfortable symptoms.

Shin splits are a common problem for many athletes. According to the Sports Injury Clinic, the term shin splints is often used to refer to any type of pain felt in your lower leg. However, true shin splints occur in the front of your shin bone, usually due to inflammation.

Back pain comes in two forms -- acute or chronic. The big difference is in the duration. Acute generally lasts for a few days and chronic can last up to three months, reports the National Institutes of Health. When it comes to treatment, corrective exercise is used in conjunction with conventional medicine.

A variety of conditions can cause red blotches to develop on the legs. Because of the many different disorders that may lead to the development of red blotches on the legs, your health care provider will ask if you are experiencing other symptoms.

The pubococcygeus muscle, generally referred to as the PC muscle, is pivotal to genital functioning in both sexes. This muscle runs from the pubic bone to the tail bone, also known as the coccyx. The failure of this vital muscle to relax as necessary can cause significant problems--often in multiple body areas.

When you refer to the muscles of your thigh, you are not simply referring to one muscle. Your thigh is actually made up of three muscles: hamstrings in the back, adductor muscles along the insides and quadriceps (the large muscle in the front).

Back pain is a common medical condition that affects approximately 75 percent of Americans at some point in their lives, according to David Gutknecht, author of the book “Low Back Pain FAQs.

Ear stretching, also known as gauging, has gained popularity in the United States and other Western societies in recent years. In the process of ear stretching, a healed piercing is slowly enlarged using progressively larger pieces of jewelry.

Sciatica is best described as a symptom of an underlying condition more than a disorder in and of itself. It's usually the result of pressure placed on the sciatic nerve, causing the sensation of pain or discomfort to radiate from the back and into the leg.

Caffeine is a drug found naturally in tea and coffee that stimulates the nervous system and can lead to feeling anxious and irritable. In 2000, experts linked caffeine to joint diseases, and people who consume more than 400 mg a day are at risk of painful withdrawal symptoms.

Spinal injuries or degeneration make even everyday movements painful. To repair a diseased portion of your spine, your physician may recommend a spinal fusion surgery to fuse together damaged vertebrae to make a stronger spinal column.

Whether called a cramp, charley horse or a growing pain, a sudden uncontrolled muscle contraction by any name translates into a painful surprise.