Search Results - Pathogenesis
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The term pathogenesis means step by step development of a disease and the chain of events leading to that disease due to a series of changes in the structure and /or function of a cell/tissue/organ being caused by a microbial, chemical or physical agent. The pathogenesis of a disease is the mechanism by which an etiological factor causes the disease. The term can also be used to describe the development of the disease, such as acute, chronic and recurrent. The word comes from the Greek pathos, "disease", and genesis, "creation". Types of pathogenesis include microbial infection, inflammation, malignancy and tissue breakdown. Most diseases are caused by multiple pathogenetical processes together. For example, certain cancers arise from dysfunction of the immune system (skin tumors and lymphoma after a renal transplant, which requires immunosuppression). Often, a potential etiology is identified by epidemiological observations before a pathological link can be drawn between the cause and the disease.
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Showing 1 to 15 of 15 Articles matching 'Pathogenesis' in related articles. |
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1. Pathogenesis of Varicosity
October 26, 2009
Chronic venous disease of the lower limbs is one of the most common medical conditions seen in clinical practice. There is some disagreement over the actual prevalence of chronic venous insufficiency due to the lack of a standardized definition. There have been several large epidemiological studies with varied criteria for venous disease. Amazingly, approximately 50% of middle aged adults have varicose veins. Definitions range from “any prominent superficial vein in the lower extremity” to “a vein which has permanently lost its valvular efficiency and, as a result of continuous dilation under... (read more)
Author: vita li
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2. Treatments For Molluscum Contagiosum
September 12, 2009
The decision whether treatment is necessary depends on the needs of the patient, the recalcitrance of their disease, and the likelihood of treatments to leave pigmentary alteration or scarring. Most of the common treatments consist of various means to traumatize the lesions. The following is a brief summary of some of the more common treatments. One of the most common, quick, efficient methods of treatment is cryotherapy. Liquid nitrogen, dry ice, or Frigiderm are applied to each individual lesion for a few seconds. Repeat treatments in 2-3-week intervals may be required. Hyper- or hypopigmen... (read more)
Author: vita li
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3. Dermatopathology Of Molluscum Contagiosum
September 11, 2009
Molluscum contagiosum is a common, generally benign, viral infection of the skin. It is common in children, sexually active adults, and immunodeficient patients. It is caused by the molluscipox virus (MCV), a member of the poxviridae family. This virus differs from other poxviruses in that it causes spontaneously regressing, umbilicated tumors of the skin rather than poxlike vesicular lesions. MCV produces a papular eruption of multiple umbilicated lesions. The individual lesions are discrete, smooth, and dome shaped. They are generally skin colored with an opalescent character. The central d... (read more)
Author: vita li
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4. Molluscum Contagiosum Pathogenesis
September 10, 2009
Molluscum contagiosum, a cutaneous and mucosal eruption caused by a Molluscipox virus, was first described and later assigned its name by Bateman in the beginning of the nineteenth century. In 1841 Henderson and Paterson described the intracytoplasmic inclusion bodies now known as molluscum or Henderson-Paterson bodies. In the early twentieth century, Juliusberg, Wile, and Kingery were able to extract filterable virus from lesions and show transmissibility. Goodpasture later described the similarities of molluscum and vaccinia. Molluscum contagiosum virus (MCV) can be found worldwide with a h... (read more)
Author: vita li
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5. Causes And Treatment Tips Of IBS
June 30, 2009
Irritable Bowel Syndrome (IBS) is a condition that many people suffer from when their colon is irritable or spastic. IBS symptoms include constipation, diarrhea, stomach pain, gas or cramping. Several names for these common disorders have appeared over the years. These include nervous indigestion, functional dyspepsia, irritable colon, spastic colon, colitis, functional bowel disease, and mucous colitis. Causes Of IBS Three main factors are significant in the pathogenesis of IBS. (1) Colonic motor activity is abnormally high in patients with colonic pain, particularly after meals or emotiona... (read more)
Author: vita li
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6. External Hemroids: Causes, Diagnosis, and Treatment
June 18, 2009
Hemroids are defined as swollen and inflamed veins of the anorectal area because of increased pressure inside the veins or weakness of the venous walls. They are similar to varicose veins of the lower limb and both share the same pathogenesis and the causes are similar.
According to their location, hemroids are classified into 2 types, external hemroids located outside the anus and internal hemroids located inside the anus. External hemroids are more common than internal hemroids and are caused by inflammation of the external hemorrhoidal veins.
What causes hemroids? One or both of... (read more)
Author: Wael Shaheen
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7. 10 Tips for Natural Hemorrhoids Treatment at Home
February 10, 2009
10 Tips for Natural Hemorrhoids Treatment at HomeThe pathogenesis of hemorrhoids requires 2 factors ; A) Weakness of the walls of the rectal veins which is the predisposing factor and this is genetically determined, and B) Increased pressure inside the rectal veins which is the precipitating factor, and this is acquired. As the first factor is genetically determined, it is the least controllable, but it can be managed by some herbal remedies. The second factor is the mainstay of hemorrhoids treatment, and is controlled by dietary and behavioral modifications with the aim of avoiding straining ... (read more)
Author: Wael Shaheen
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8. Complete Information on Acalvaria with Treatment and Prevention
June 19, 2008
Acalvaria is an uncommon inborn deformity in which the thin bones of the cranial hurdle, duramater and associated muscles are missing but the key anxious structure is normally untouched. The circumstance is often confused by prenatal ultrasonography with anencephaly or an encephalocele. Whereas the cerebral hemispheres are missing in anencephaly, the cranial contents in acalvaria are mostly comprehensive, though some neuropathological irregularity is frequently existing. The presumed pathogenesis of acalvaria is defective migration of the membranous neurocranium with natural arrangement of the... (read more)
Author: Juliet Cohen
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9. Complete Information on Erythema elevatum diutinum with Treatment and Prevention
May 30, 2008
Erythema elevatum diutinum is a chronic and uncommon dermatosis that is considered to be a variation of leukocytoclastic vasculitis. The exect reason of erythema elevatum diutinum is unidentified, although the pathogenesis is believed to be exempt complex-mediated. It can happen at any age. However, it is mostly an adult disease that occurs from the third to sixth decade of life. Associated infections include bacterial, viral, tuberculosis, hepatitis, and syphilis. Various conditions have been reported with this disease, which include hematologic and autoimmune disorders, such as rheumatoid ar... (read more)
Author: Juliet Cohen
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10. Diabetic Skin Care
May 15, 2008
DIABETIC SKIN CARE Nelson J. Gurll, M.D., F.A.P.W.C.A. Darlene E. McCord, Ph.D., F.A.P.W.C.A. McCord Research, Inc. Educational Objectives: At the conclusion of the talk (paper), the audience member (reader) will be able to: 1. Discuss the extent and seriousness of diabetes mellitus in the United States, 2. Understand the pathogenesis of diabetic neuropathy, 3. Relate the serious complications of diabetes mellitus, 4. Understand the 500 Dalton Rule and 5. ... (read more)
Author: Darlene McCord
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11. Complete Information on Ainhum with Treatment and Prevention
April 24, 2008
Ainhum is the liberal constriction of the home of the fifth toe followed by unscripted amputation. It is a disease of adults. The aetiology and pathogenesis have not been established still. There is some genetic predisposition and tiny wounds may beat a character, jointly with the trend to keloid establishment. Ainhum predominantly affects dark patients in equatorial regions. Although it has been reported in mild areas, ainhum appears to be progressively less popular in the United States. The precise etiology of genuine ainhum is vague. Race and mood obviously are predisposing factors. Ainhum ... (read more)
Author: Juliet Cohen
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12. Herbal Medicines For Inflammatory Bowel Disease
January 09, 2008
Inflammatory Bowel Disease covers a number of bowel disorders. It can describe colitis, which affects the colon, or regional enteritis (known as Crohn's disease), which affects the small intestine. The cause of IBD is still unknown. There may be several factors, such as genetic predisposition, infectious agent, and auto-immunity involved in its pathogenesis. The extraintestinal manifestations which may accompany these disorders, such as arthritis, pericholangitis may suggest auto-immune phenomena and that therapeutic agents, such as corticosteroids may exert their effects through immunosuppres... (read more)
Author: Francis Adam
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13. Pyelonephritis and urinary tract infection
April 27, 2007
Pyelonephritis is a renal disorder affecting tubules, interstitium, and renal pelvis and is one of the most common disease of the kidney. It occurs in two forms. Acute pyleonephritis is caused by bacterial infection and is the renal lesion associated with urinary tract infection. Chronic pyelonephritis is a more complex disorder: bacterial infection plays a dominant role, but other factors (vesicoureteral reflux, obstruction) are involved in its pathogenesis. Pyelonephritis is a serious complication of an extremely common clinical spectrum of urinary tract infections that affect the urinary b... (read more)
Author: donald anderson
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14. Acute gastritis
April 19, 2007
Acute gasritis is an acute mucosal inflammatory process, usually of a transient nature. The inflammation may be accompanied by hemorrhage into the mucosa and in more severe circumstances by sloughing of the superficial mucosa. This severe erosive form of the disease is an important cause of acute gastrointestinal bleeding.
The pathogenesis of poorly understood in part because normal mechanisms for gastric mucosal protection are not clear. Acute gastritis is frequently associated with the following:
Heavy use of nonsteroidal anti-inflammatory drugs (NSAIDs) PARTICULARLY ASPIRIN Exces... (read more)
Author: donald anderson
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15. Irritable Bowel Syndrome Pathogenesis
August 08, 2006
Because most people do not seek help until symptoms become particularly frustrating, irritable bowel syndrome pathogenesis or the progression or development of the syndrome is unknown. Some things are known about IBS. For example, it is known that many people who have IBS also suffer from some emotional trouble, particularly stress or anxiety. These issues are not believed to be the cause of irritable bowel syndrome, because it is not known whether the stress comes first or the IBS comes first. It is clear that stress and other emotional issues can worsen symptoms.
Although irritable ... (read more)
Author: Patsy Hamilton
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