Your kidneys serve a vital role in removing waste and excess fluid from your body through urination. Sometimes one of the kidneys becomes swollen. A swollen kidney is generally due to a serious disorder that requires medical attention.

Lteral hamstring tendinopathy is a condition where the lateral muscle in the hamstring is inflamed where its tendon inserts into the bone.

A tight heel cord, known as the Achilles tendon, and tight hamstrings limit your range of motion. Learn how to alleviate the discomfort.

When hamstring tendons are strained or torn, they can really wreak havoc on not only your workout or athletic performance, but also on your everyday life.

The quadriceps are a set of four muscles on the front of your thighs. Keep them strong to maintain function in your legs and knees.

If you find your legs continue to hurt after exercising, it’s possible you may have an underlying blood vessel disorder.

If you feel a knot in your hamstring after an injury, you might have a severe tear in your muscle and need medical attention.

Tenderness and pain in your quads could be due to an injury, DOMS or, in rare cases, a serious medical condition.

Various conditions can cause pain in the lower left side of the abdomen, also known as left lower quadrant (LLQ) pain. It is sometimes difficult to determine the cause of LLQ pain, as a number of structures are found in this part of the body. The possible causes can vary depending on a person’s age and sex.

Getting pregnant if you have polycystic ovary syndrome -- commonly known as PCOS -- can present a challenge. PCOS occurs in as many as 5 to 10 percent of women of childbearing age, according to a [March 2008 "Fertility and Sterility" article](http://www.fertstert.org/article/S0015-0282(07)03661-8/pdf).

Trauma from a gunshot or knife wound, or high force blunt trauma like a car accident, can all lead to a punctured lung. A lung may also be unintentionally punctured when a doctor is attempting to insert an intravenous line into a large blood vessel in the chest or neck.

Torn lenses should be removed right away, because they can scratch and irritate the eye. This process is similar to removing an intact contact lens but requires additional care and precision.