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Portal hypertension is high pressure in the veins that filter blood from the intestines through the liver (portal system of the

Polymyalgia rheumatica (PMR) is a condition that causes inflammation of the joints. This causes pain and stiffness, most often in

Polycythemia, also called erythrocytosis, is an abnormal increase in the number of red blood cells produced by the bone marrow

Polyarticular juvenile idiopathic arthritis (JIA), also known as polyarthritis, affects 5 or more joints during the first 6 months

Potassium is a mineral in the body that helps maintain fluid balance, nerve function, and muscle contraction, as well as the

Puberty is the time of life when people develop physically and sexually so that they can have children. It is the time when male

Pulmonary edema is the buildup of fluid in the lungs, usually resulting from the heart's inability to pump blood through the body

Pulmonary fibrosis is a condition in which scarring occurs in the lungs. It can be caused by an infection (such as tuberculosis or

Prostaglandins are a group of chemicals made by nearly all of the body's cell membranes. Different prostaglandins have different

Progestin is a synthetic hormone used to affect a woman's body in the same ways as the hormone progesterone. The ovaries produce