/ul"seuhr/, n.1. Pathol. a sore on the skin or a mucous membrane, accompanied by the disintegration of tissue, the formation of pus, etc.2. See peptic ulcer.3. any chronically corrupting or disrupting condition, element, etc.[1350-1400; ME < L ulcer- (s. of ulcus); akin to Gk hélkos]
* * *Concave sore on the skin or lining of an organ, with well-defined, sometimes raised edges.Erosion of surface tissue may extend to deeper layers. The main symptom is pain. The term most often refers to peptic ulcer but also includes skin ulcer, common on legs with varicose veins and the feet of people with diabetes mellitus (when nerve damage has reduced sensation), and decubitus ulcer (bedsore or pressure sore). Other causes include infection, trauma (e.g., burn, frostbite), improper nutrition (e.g., thiamine deficiency), and cancer (likely in ulcers hard to the touch). Skin ulcers over a month old should be checked for cancer, especially after middle age.
* * *a lesion or sore on the skin or mucous membrane resulting from the gradual disintegration of surface epithelial tissue. An ulcer may be superficial, or it may extend into the deeper layer of the skin or other underlying tissue. An ulcer has a depressed floor or crater surrounded by sharply defined edges that are sometimes elevated above the level of the adjoining surface. The main symptom of an ulcer is pain.The main causes of ulcers are infection, faulty blood circulation, nerve damage, trauma, nutritional disturbances including thiamine or other vitamin deficiencies, and cancer. Such bacterial infections as tuberculosis or syphilis can cause ulcers on any surface of the body. Any infection under the skin, such as a boil or carbuncle, may break through the surface and form an inflammatory ulcer. The ulcers on the legs of persons with varicose veins (varicose vein) are caused by the slow circulation of the blood in the skin. Diabetics (diabetes mellitus) may sustain ulcers on their feet or toes after losing sensation in those areas due to nervous-system damage. A bedsore, or decubitus ulcer, typically occurs on the skin of the back in immobilized or bedridden persons. A peptic ulcer is an ulcer that occurs in the stomach or the first segment of the duodenum, parts of the intestinal tract that are bathed by gastric juice. Ulcers can also result from burns, electric burns, and frostbite.When an ulcer of the skin has been present for at least one month or is hard to the touch, the possibility of cancer must be considered. The probability of cancer is increased if the patient is past middle age. Ulcers on the border of the lower lip in elderly men are frequently cancers. Such cancers must be recognized and treated early before they spread and become inoperable. By contrast, superficial ulcers on the lips, known as cold sores, are caused by a virus and are not serious. Ulcers in the mouth and throat are frequently caused by infection but are sometimes cancerous, especially in older persons. Cancerous ulcers may also occur in the stomach, small or large intestine, and rectum.
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ulcer — ÚLCER, ulcere, s.n. 1. Leziune (fără tendinţă de cicatrizare) care apare pe suprafaţa pielii sau a mucoaselor (stomacului, duodenului); boală caracterizată prin prezenţa unor astfel de leziuni; ulcus (1). 2. Boală a arborilor, pricinuită de… … Dicționar Român
Ulcer — Ul cer, n. [F. ulc[ e]re, L. ulcus, gen. ulceris, akin to Gr. ?.] 1. (Med.) A solution of continuity in any of the soft parts of the body, discharging purulent matter, found on a surface, especially one of the natural surfaces of the body, and… … The Collaborative International Dictionary of English
ulcer — (n.) c.1400, from O.Fr. ulcere, from V.L. ulcerem, from L. ulcus (gen. ulceris) ulcer, from PIE *elk es wound (Cf. Gk. elkos) … Etymology dictionary
ulcer — [ul′sər] n. [L ulcus (gen. ulceris) < IE * elkos , abscess > Sans árśas , hemorrhoids, Gr helkos, abscess, wound] 1. an open sore (other than a wound) on the skin or some mucous membrane, as the lining of the stomach (peptic ulcer),… … English World dictionary
Ulcer — Ul cer, v. t. To ulcerate. [R.] Fuller. [1913 Webster] … The Collaborative International Dictionary of English
ulcer — ► NOUN ▪ an open sore on the body, caused by a break in the skin or mucous membrane which fails to heal. DERIVATIVES ulcered adjective ulcerous adjective. ORIGIN Latin ulcus … English terms dictionary
Ulcer — duodenal ulcer. Ulcers are healing wounds that develop on the skin, mucous membranes, or eye. Although they have many causes, they are marked by: # Loss of integrity of the area # Secondary infection of the site by bacteria, fungus or virus #… … Wikipedia
Ulcer — An area of tissue erosion, for example, of the skin or lining of the gastrointestinal (GI) tract. Due to the erosion, an ulcer is concave. It is always depressed below the level of the surrounding tissue. Ulcers can have diverse causes. Ulcers on … Medical dictionary
ulcer — n. 1) a break in an epithelial surface. 2) a break in the skin extending to all its layers, or a break in the mucous membrane lining the alimentary tract, that fails to heal and is often accompanied by inflammation. Of the many types of skin… … The new mediacal dictionary
ulcer — Synonyms and related words: abdominal hernia, abscess, aposteme, bane, bed sore, blain, bleb, blight, blister, boil, bubo, bulla, bunion, cancer, canker, canker sore, carbuncle, chancre, chancroid, chilblain, cold sore, colitis, curse, disease,… … Moby Thesaurus