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Eschar
Eschar The scab formed when a wound or skin is sealed by the heat of cautery or burning. Also the dark crusted ulcer (tache noire) at the site of the chigger (mite larva) bite in scrub typhus.
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Wound
A wound is a physical trauma where the skin is torn, cut or punctured. Exposed to air, there is not only a significant chance of death due to loss of blood, but increased chance of bacteria entering the wound or an infection.
Skin
Skin is an organ of the integumentary system; which is composed of a layer of tissues that protect underlying muscles and organs. Skin is used for insulation, vitamin D production, sensation, and excretion (through sweat).
Ulcer
A sore on the skin surface or on the stomach lining.
Bite
Relationship of the upper and lower teeth on closure (occlusion).
Typhus
An infectious disease spread to people by the bite of ticks, mites, fleas and lice. Typhus is characterized by high fever, headache and a rash.
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Escherichia coli
Bacteria that cause infection and irritation of the large intestine. The bacteria are spread by unclean water, dirty cooking utensils, or undercooked meat. See also gastroenteritis.
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Erythroleukemia
A form of acute myeloid leukemia (AML) involving the cells that give rise to the erythrocytes (the red blood cells). In this type of leukemia, the body produces large numbers of abnormal, immature red blood cells. Erythroleukemia is classified as acute nonlymphocytic leukemia (ANLL) of the M6 type.
Erythrophobia
An abnormal and persistent fear of blushing. Sufferers of erythrophobia experience undue anxiety even though they realize their fear is irrational. Their anxiety results from worry about being the focus of attention and the subject of embarrassment. Attempts to suppress blushing often have the opposite effect. Sufferers of erythrophobia tend to avoid social gatherings and workplace projects that require them to interact with, or speak before, groups of co-workers.
Erythroplakia
A reddened patch with a velvety surface found in the mouth.
Erythropoietin (EPO)
A hormone produced by the kidney that promotes the formation of red blood cells in the bone marrow. EPO is a glycoprotein (a protein with a sugar attached to it). Human EPO has a molecular weight of 34,000.
Erythropoietin test
A test of the hormone erythropoietin (EPO) in blood. An abnormal level of EPO may mean bone marrow or kidney disease or EPO abuse.
Eschar
Esophageal
Pertaining to the esophagus.
Esophageal speech
Speech produced with air trapped in the esophagus and forced out again. People with a laryngectomy (for example, for laryngeal cancer) may be taught to produce esophageal speech.
Esophageal stricture, acute
A narrowing or closure of the normal opening of the swallowing tube leading to the stomach, usually caused by scarring from acid irritation. Acute, complete obstruction of the esophagus occurs when food (usually meat) is lodged in the esophageal stricture. Patients experience chest pain, and are unable to swallow saliva. Attempts to relieve the obstruction by inducing vomiting at home are usually unsuccessful. Patients with complete esophageal obstruction can breathe, and are not at any risk of suffocation. Endoscopy is usually employed to retrieve the meat and relieve the obstruction.
Esophageal stricture, chronic
A longstanding narrowing or closure of the normal opening of the swallowing tube leading to the stomach, usually caused by scarring by acid irritation. Narrowing of the esophagus. A common complication of chronic gastroesophageal reflux disease (GERD). Several procedures are available for stretching (dilating) the strictures without having to resort to surgery. One of the procedures involves placing a deflated balloon across the stricture at the time of endoscopy. The balloon is then inflated, thereby opening the narrowing caused by the stricture. Another method involves inserting tapered dilators of different sizes through the mouth into the esophagus to dilate the stricture.
Esophagectomy
An operation to remove a portion of the esophagus.
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