| sloughing ulcer | <dermatology> A rapidly spreading ulcer attended by the formation of extensive sloughing. Synonym: perambulating ulcer, sloughing ulcer, ulcus ambulans. Origin: L. Phagedaena, Gr Phago, To eat. (05 Mar 2000) |
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| soft ulcer | A sexually transmitted disease caused by the bacteria haemophilus ducreyi. Causes multiple painful ulcers on the penis and the vulva often associated with tender and enlarged inguinal lymph nodes. (27 Sep 1997) |
| stasis ulcer | Ulcer due to varicose veins. Chronic venous insufficiency in the deep veins of the legs leads to shunting the venous return into the superficial veins, in which pressure and flow rate, as well as oxygen content, are increased. (12 Dec 1998) |
| stercoral ulcer | An ulcer of the colon due to pressure and irritation of retained faecal masses. (05 Mar 2000) |
| steroid ulcer | An ulcer, usually on the leg or foot, developing from a wound in patients undergoing long-term steroid therapy; results from the wound-healing inhibitory effects characteristic of steroids. (05 Mar 2000) |
| stomach ulcer | An ulcer in the mucosal lining of the stomach. Ulcer formation results from gastric inflammation that may be triggered by the use of alcohol, aspirin or non-steroidal anti-inflammatory agents. Symptoms include recurrent abdominal pains (may be relieved by antacids), nausea, vomiting, weight loss and fatigue. Complications include GI bleeding, obstruction, perforation and ulcer penetration into surrounding tissues. Treatment includes the avoidance of alcohol, smoking, aspirin, anti-inflammatories and caffeine. Medications such as antacids or H2 antagonists (for example cimetidine, ranitidine) or proton pump inhibitors (omeprazole) have been shown to be effective treatment. (27 Sep 1997) |
| stomal ulcer | An intestinal ulcer occurring after gastrojejunostomy in the jejunal mucosa near the opening (stoma) between the stomach and the jejunum. (05 Mar 2000) |
| decubitus ulcer | <dermatology> A chronic ulcer that appears in pressure areas in debilitated patients confined to bed or otherwise immobilised, due to a circulatory defect from the enhanced tissue pressure in high-contact areas, often occurring over a bony prominence (for example sacral decubitus). (27 Sep 1997) |
| Sutton's ulcer | A solitary, deep, painful ulcer of the buccal or genital mucous membrane. (05 Mar 2000) |
| dendritic corneal ulcer | Keratitis caused by herpes simplex virus. (05 Mar 2000) |
| dental ulcer | An ulcer on the oral mucuous membrane caused by biting or by rubbing against the edge of a broken tooth. (05 Mar 2000) |
| symptomatic ulcer | An ulcer due to systemic disease, such as tuberculosis. Synonym: symptomatic ulcer. (05 Mar 2000) |
| syphilitic ulcer | <dermatology> The primary skin lesion of syphilis which begins at the site of infection after an interval of 10-30 days as a papule or red ulcerated skin lesion. (27 Sep 1997) |
| Syrian ulcer | Old names for diphtheria. (05 Mar 2000) |
| diphtheritic ulcer | An ulcer covered with a gray adherent membrane, caused by Corynebacterium diphtheriae. (05 Mar 2000) |