Baldness, or hair loss, can be caused by many things including aging, hormones or illness. It's more common in men and can be treated with hair transplants or other procedures.
Blisters are bubbles on the skin that are filled with bloody or clear fluid. Blisters are common injuries and often heal on their own.
Barrett's esophagus is when the normal cells that line your food pipe (esophagus) turn into cells not usually found in your body. The new cells take over because the lining of the esophagus has been damaged. The new, abnormal cells are called specialized columnar cells.