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A pulmonary embolism (PE) is a blood clot that develops in a blood vessel in the body (often in the leg). It then travels to a lung artery where it suddenly blocks blood flow.

Detailed information on travel for people with HIV

The shoulder is a complex joint with several layers, including bones, ligaments, tendons, and muscles.

Renal vascular disease affects the blood flow into and out of the kidneys. It may cause kidney damage, kidney failure, and high blood pressure.

Treatment for cancer, as well as the cancer itself, can affect your sense of taste or smell. You may find that many foods seem to have less taste. Other foods, especially meat or other high-protein foods, may taste bitter or metallic. Read on to learn what you can do about it.

Sometimes, cancer cannot be cured. When that is the case, patients and families are faced with complex emotions and a variety of end of life issues.

Detailed information on allergy triggers and symptom control

Detailed information on allergy testing, including blood tests and skin tests.

Rhinitis is when a reaction occurs that causes a stuffy nose, runny nose, sneezing, and itching. Most types of rhinitis are caused by inflammation. Here's what you need to know.