Balance, sense of: Our sense of balance is regulated by a complex interaction of the following parts of the nervous system:
The inner ears (also called the labyrinth) monitor the directions of motion, such as turning or forward-backward, side-to-side, and up-and-down motions.
The eyes observe where the body is in space (i.e., upside down, right side up, etc.) and also the directions of motion.
Skin pressure receptors such as those located in the feet and seat sense what part of the body is down and touching the ground.
Muscle and joint sensory receptors report what parts of the body are moving.
The central nervous system (the brain and spinal cord) processes all the bits of information from the four other systems to make some coordinated sense out of it all.
- Balanitis, circinate
Balanitis, circinate: A form of skin inflammation around the penis in males with Reiter’s syndrome. The skin around the shaft and tip (glans) penis can become inflamed and scale. This inflammation around the penis can be helped by cortisone creams (such as TOPICORT). Reiter’s syndrome is a systemic rheumatic disease, systemic since it can affect […]
Balanoposthitis: In the uncircumcised male, balanitis (inflammation of the glans, the rounded head of the penis) and posthitis (inflammation of the foreskin) usually occur together as balanoposthitis: inflammation of both the glans and foreskin. Circumcision prevents balanoposthitis. Without a foreskin, there can of course be no posthitis and hence no balanoposthitis. An uncircumcised boy should […]
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 […]