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Cold sores are small blisters or sores on the lip or sometimes inside the mouth. Learn what causes them, their symptoms, and how to prevent them.

One of the most common symptoms of a traumatic brain injury (TBI) is slowed thinking. After TBI, you may have trouble remembering things, getting organized, or finding the right words to use when speaking.

A Schatzki ring is a thin ring of extra tissue inside the lower end of the esophagus.

Vasculitis is inflammation of the arteries and veins. It can damage organs and tissues.

People who have A1AD have low levels of a protein called alpha-1 antitrypsin in their blood. This protein is made in the liver. Not having enough of the protein in your blood can lead to COPD.

Core decompression of the hip is a type of surgery. Your doctor may advise this surgery if you have osteonecrosis. Learn more about how and why it's done, and what the risks are.

In a few years you will need to change from seeing a healthcare provider who treats children (a pediatrician) to one who treats adults (an adult healthcare provider). So it’s helpful to start taking an active role in your care now.

If you are ready to change from seeing a healthcare provider who treats children (a pediatrician) to one who treats adults (an adult healthcare provider). As a teen with a long-term (chronic) health condition, you may also need to find a new specialist who treats adults with your condition.

Step therapy requires a person to try lower-cost medicines first, before the person's insurer approves the higher-cost medicine that was prescribed.