Flank pain as the result of a pulled or torn muscle can develop on one or both sides of the body between the back and the upper abdomen. Although it is not typically a dangerous condition, it can worsen and become debilitating if left untreated.

Diabetes is a chronic disease in which the body is unable to produce and use insulin properly. A key function of insulin is to help convert glucose to energy; thus, diabetics have higher than normal levels of glucose in the blood. In 2007, over 23 million Americans -- 7.8 percent of the U.S. population -- had diabetes.

The soleus and gastrocnemius are two of the muscles in your calves and are heavily involved in many of the exercises you perform each day. An adequate fitness program will incorporate stretching because it increases flexibility, improves circulation and range of motion, and reduces muscle stress.

If you suffer from gastritis, your stomach lining is inflamed and you make less acid, enzymes and mucus. Acid and enzymes help you break down food and mucus protects your stomach from acid. Gastritis can be acute or chronic and may result in stomach bleeding, erosion and ulcers.

When your kidneys are not functioning properly the collection of urinary wastes can develop into kidney stones.

People with degenerative types of arthritis, such as osteoarthritis and rheumatoid arthritis, typically experience a gradual onset of joint pain and stiffness. Acute forms of arthritis, however, develop suddenly.

Most kidney stones form as a result of chemicals that are deposited in the kidneys and not passed from the body through urination. Crystals form and attach themselves to the wall of the kidney especially when urine is highly acidic and concentrated, according to the Royal Infirmary of Edinburgh Renal Unit.

Flomax, or tamsulosin, is a prescribed medication used to treat the signs and symptoms of benign enlargement of the prostate gland, or benign prostatic hypertrophy (BPH), according to MayoClinic.com. Prostate enlargement is common in older men and can make urinating difficult.

Skin tags are little flaps or knobs of skin that can appear on various parts of the body. The tags are flesh-colored and are benign, though the size of a skin tag can sometimes interfere with normal activities. A child can develop skin tags, also called papillomas, just as adults.

Ear wax builds up to a greater degree in some people than in others. This phenomenon is related to the ongoing process of shedding skin cells over the human body.

According to Kids Health, infants can experience anxiety in some situations. Infants may feel anxious when they are separated from their parents or are in a situation or around people that they are unsure about or experience loud noises or sudden movement.

Discovered in 1849, multiple sclerosis (MS) is a neurological disorder in which inflammation occurs in the white matter of the brain and spinal cord, according to the National Institute of Neurological Disorders and Stroke (NINDS).