Search Page

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

Polycythemia vera is an abnormal increase in blood cells, primarily red blood cells (polycythemia) but also white blood cells and

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

Polycystic ovary syndrome (PCOS) is a hormone imbalance that can affect ovulation. It can cause problems with your menstrual

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

Polio (poliomyelitis) is a viral illness that damages nerves that control muscles, resulting in muscle weakness. In severe

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

Painful menstrual cramps (dysmenorrhea) can occur during or just before your period. The cramping can involve your lower belly

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

The pupil is the black area in the center of the iris, the colored part of the eye. The iris controls the size of the pupil in