A skin ulcer that develops in an area in which the circulation is sluggish and the return of venous blood toward the heart is poor. A common location for stasis ulcers is on the ankles. Stasis refers to a stoppage or slowdown in the flow of blood (or other body fluid, such as lymph).
The process or fact of being eroded away, as by an ulcer.
- Ulcerative gingivitis
This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead tissue from the mouth and throat due to the spread of infection from the gums. Certain germs (including fusiform bacteria and spirochetes) have been thought to be involved, but the full story behind this long- known disease is still […]
- Ulcerative proctitis
Ulcerative colitis that is limited to the rectum. Ulcerative colitis itself is a relatively common disease involving inflammation of the large intestine (the colon). The cause is unknown. It is a form of inflammatory bowel disease and has some similarity to a related disorder, Crohn’s disease. The end of the colon (the rectum) is always […]
- Ullrich congenital muscular dystrophy
A disorder evident at birth characterized by muscle weakness, contractures of multiple joints, and hyperextensibility (looseness) of joints, particularly distal joints (well away from the trunk). The muscle weakness progresses slowly and ranges from mild to severe. The disease is inherited as an autosomal recessive trait and is associated with mutations in several genes, including […]
The larger of the two long bones within the forearm. (The smaller one is the radius.) The ulna is on the same side of the arm as the little finger.