Balantidiasis: The disease caused by infection with the protozoan parasite Balantidium.
Balantidium: A genus of protozoa with cilia that includes Balantidium coli (B. coli). B. coli is the largest protozoan and the only ciliate parasite to infect humans. The disease that B. coli causes is called balantidiasis. Clinical features, when present, include persistent diarrhea, occasionally dysentery, abdominal pain, and weight loss. Symptoms can be severe in […]
Baldness: Medically known as alopecia. There are many types of baldness, each with a different cause. Baldness may be localized to the front and top of the head, as in the very common type of male-pattern baldness; baldness may be patchy, a condition called alopecia areata; or a variant of alopecia areata may involve the […]
- Baldness, patchy
Baldness, patchy: Patchy baldness. Also referred to as alopecia areata. Alopecia means baldness and areata means occurring in patches. This process typically begins with patchy hair loss on the scalp and sometimes progresses to complete baldness and even loss of body hair. The hair loss tends to be rather rapid and asymmetrical and is different […]
- Ball-and-socket joint
Ball-and-socket joint: A joint in which the round end of a bone fits into the cavity of another bone. The hip joint is a ball-and-socket joint.
- Balloon angioplasty
Balloon angioplasty: Coronary angioplasty is accomplished using a balloon-tipped catheter inserted through an artery in the groin or arm to enlarge a narrowing in a coronary artery. Coronary artery disease occurs when cholesterol plaque builds up (atherosclerosis) in the walls of the arteries to the heart. Angioplasty is successful in opening coronary arteries in 90% […]