Belching is related to the venting of stomach air or intentional burping, and is often related to a medical condition.

Wearing an the wrong prescription of contact lenses, or wearing lenses not fitted to your eyes, can cause discomfort, blurry vision, eye damage and infection.

Lymph node cancers are tumors of the lymphatic system, which is part of the body's immune system. Also known as lymphomas, these cancers are made of infection-fighting cells called lymphocytes that multiply uncontrollably. They collect in lymph nodes and other parts of the body to form tumors.

If the odds of winning the lottery were 1 in 5, the line for tickets would be long indeed. In fact, as many as 1 in every 5 Americans get the flu each year, according to the Centers for Disease Control and Prevention (CDC). These high odds could be decreased if more Americans took advantage of influenza immunization.

High systolic blood pressure is sometimes linked to an underlying health problem, but most the cause is unclear.

Morning headaches occur with a variety of disorders, including migraine, tension-type headache, sinusitis, and medication and caffeine withdrawal.

Located underneath the lungs, the diaphragm is a muscle that contracts every time a person takes a breath. This contraction causes the diaphragm to drop down, allowing the lungs to expand and take in air. Hiccups occur when the diaphragm suddenly contracts at other times.

Although it's not often talked about, fascia plays a large role in how your body feels. Take good care of it through stretching, rolling and other techniques.

Stomach aches and back pain can make you feel terrible, particularly when they occur together. As they are both common problems, when abdominal and back pain occur at the same time, it may be just a coincidence. But several medical conditions can cause both symptoms.

The Centers for Disease Control and Prevention (CDC) estimates that 1 in 3 people will develop shingles at some time during their life. The disease is caused by varicella-zoster virus, the same virus that causes chickenpox.

Ovarian cysts are sacs of fluid that grow inside or on the ovary. There are different types of ovarian cysts, many of which are normal. In fact, before women reach menopause, a small ovarian cyst forms each month as part of the normal menstrual cycle.

Sleeping with contact lenses in place can cause eye dryness and irritation, and may increase the risk of eye infection and eye damage.