| ADA | adenosine deaminase; American Dental Association; American Dermatological Association; American Diab... |
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| ADAA | American Dental Assistants Association |
| ADAP | American Dental Assistant's Program; Assistant Director of Army Psychiatry |
| ADHA | American Dental Hygienists Association |
| ADS | acute death syndrome; acute diarrheal syndrome; Alcohol Dependence Scale; alternative delivery syste... |
| tanner's ulcer | An ulcer produced by exposure to chromium compounds. Synonym: tanner's ulcer. (05 Mar 2000) |
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| elusive ulcer | A focal and often multiple lesion involving all layers of the bladder wall in chronic interstitial cystitis; the surface epithelium is destroyed by inflammation and the initially pale lesion cracks and bleeds with distention of the bladder. Synonym: elusive ulcer, Fenwick-Hunner ulcer. (05 Mar 2000) |
| transparent ulcer of the cornea | An obsolete term for an ulcer of the cornea, occurring usually in children, that heals without opacity. (05 Mar 2000) |
| trophic ulcer | Ulcer resulting from cutaneous sensory denervation. See: perforating ulcer of foot. Synonym: trophic gangrene. (05 Mar 2000) |
| tropical ulcer | The lesion occurring in cutaneous leishmaniasis, tropical phagedenic ulceration caused by a variety of microorganisms, including mycobacteria; common in northern Nigeria. Synonym: tropical sore. (05 Mar 2000) |
| ulcer | <dermatology> A local defect or excavation, of the surface of an organ or tissue, which is produced by the sloughing of inflammatory necrotic tissue. Origin: L. Ulcus, Gr. Helkosis (18 Nov 1997) |
| ulcer, duodenal | An ulcer (a hole in the lining) of the duodenum (the first portion of the small intestine). Ulcer formation is related to h. Pyloridus bacteria in the stomach, anti-inflammatory medications, and smoking cigarettes. Ulcer pain may not correlate with the presence or severity of ulceration. Diagnosis is made with barium X-ray or endoscopy. Complications of ulcers include bleeding and perforation. Treatment involves antibiotics to eradicate h. Pyloridus, eliminating risk factors, and preventing complications. (12 Dec 1998) |
| ulcer, gastric | A hole in the lining of the stomach corroded by the acidic digestive juices which are secreted by the stomach cells. Ulcer formation is related to h. Pyloridus bacteria in the stomach, anti-inflammatory medications, and smoking cigarettes. Ulcer pain may not correlate with the presence or severity of ulceration. Diagnosis is made with barium X-ray or endoscopy. Complications of ulcers include bleeding, perforation, and blockage of the stomach (gastric obstruction). (12 Dec 1998) |
| ulcer, oesophageal | A hole in the lining of the oesophagus (tube-like organ leading from the throat to the stomach) corroded by the acidic digestive juices secreted by the stomach cells. Ulcer formation is related to h. Pyloridus bacteria in the stomach, anti-inflammatory medications, and smoking cigarettes. Ulcer pain may not correlate with the presence or severity of ulceration. Diagnosis is made with barium X-ray or endoscopy. Complications of ulcers include bleeding and perforation. Treatment involves antibiotics to eradicate h. Pyloridus, eliminating risk factors, and preventing complications. (12 Dec 1998) |
| ulcer, peptic | A peptic ulcer is a hole in the lining of the stomach, duodenum, or oesophagus. A peptic ulcer of the stomach is called a gastric ulcer, an ulcer of the duodenum is a duodenal ulcer, and a peptic ulcer of the oesophagus is an oesophageal ulcer. A peptic ulcer occurs when the lining of these organs is corroded by the acidic digestive juices which are secreted by the stomach cells. Peptic ulcer disease is common, affecting millions of americans yearly. The medical cost of treating peptic ulcer and its complications runs in the billions of dollars annually in the u.s. Recent medical advances have increased our understanding of ulcer formation. Improved and expanded treatment options are now available. (12 Dec 1998) |
| fascicular ulcer | A localised vascularization of the cornea to the site of a corneal ulcer. (05 Mar 2000) |
| undermining ulcer | A chronic cutaneous ulcer with overhanging margins; due to haemolytic streptococci or other bacteria. (05 Mar 2000) |
| Zambesi ulcer | An ulcer, usually single, about 3 cm in diameter, on the foot or leg, occurring in laborers in the Zambesi Delta; it has a sloughing surface, but does not spread and produces no constitutional symptoms or glandular enlargement; it is associated with the presence of a spirillum and a large fusiform bacillus; one attack seems to confer a partial immunity. (05 Mar 2000) |
| Fenwick-Hunner ulcer | A focal and often multiple lesion involving all layers of the bladder wall in chronic interstitial cystitis; the surface epithelium is destroyed by inflammation and the initially pale lesion cracks and bleeds with distention of the bladder. Synonym: elusive ulcer, Fenwick-Hunner ulcer. (05 Mar 2000) |
| foot ulcer | <dermatology> Lesion on the surface of the skin of the foot, usually accompanied by inflammation. The lesion may become infected or necrotic and is frequently associated with diabetes or leprosy. (12 Dec 1998) |