What causes DES?
Vision CenterAging process. Tear flow normally decreases with age. About 75% of individuals over age 65 suffer from DES symptoms. Contact Lens Wear. This dramatically increases tear evaporation, causing discomfort, infection, and/or increases protein deposits. DES is the leading cause of CL intolerance. Environmental Factors. People who are exposed to smoke, air pollution, high altitude, sunny, windy, cold, dry air conditions are at risk for DES. Side Effects of Disease/ Medications.
Related QuestionsWhat is DES?
Untitled PageDES (diethylstilbestrol) is a synthetic form of estrogen, a female hormone. It was prescribed between 1940 and 1971 to help women with certain complications of pregnancy. Use of DES declined in the 1960s after studies showed that it is not effective in preventing pregnancy complications. When given during the first 5 months of a pregnancy, DES can interfere with the development of the reproductive system in a fetus.
Related QuestionsWhat are the Causes?
Psoriasis Help Organisation - Online ForumCy, JUDGE DREDD, Madtoscratch, Lianne, lutece, SueB, akesingland, riaY, bryndavell, Groovygirl, david_8, SJ, Terrimayormaynot, jjoblogs1, anglichanin, Tom_B, bubble, TrishR, squoink, GATTACA, willy, Roger, margurita_simpson, snowy, beacon, LyndsayA, stripe77, Snow Surfer, lighthearted The material has been extracted from Psoriasis at your fingertips by Dr Tim Mitchell & Rebecca Penzer (Class Publishing).
Related QuestionsQuality Health | Skin Cancer, NonmelanomaNonmelanoma skin cancer is usually caused by too much sun. Using tanning beds or sunlamps too much can also cause it.Related Questions
Frequently Asked QuestionsCopyright © 2002-2005 Health Information Publications. The information provided on this Web site has been developed exclusively by and for Health Information Publications and ehealthMD and may not be copied without written permission. The information provided is for general information only and is not intended to replace the advice of your health-care provider. This is original material developed by Health Information Publications, Copyright © 1990-2005Related Questions
Foundation for Ichthyosis and Related Skin TypesA: The term "ichthyosis" refers to a group of disorders caused by a genetic defect which may have been spontaneous (due to a mutation of a gene) or passed on through family inheritance. The skin's natural shedding process is slowed or inhibited and, in some forms of ichthyosis, the production of skin cells is too rapid.Related Questions
Vulvodynia: Vulvar Pain Clinics: FAQ's Vestibulitis, Vestibu...The precise cause of Vulvodynia is unknown. Some of the theories on causality include: a viral, fungal or bacterial infection; an allergic response to an environmental irritant; an autoimmune response to the body’s own chemistry; trauma; or the result of pelvic floor muscle instability. There is no clear connection of Vulvodynia to sexually transmitted disease as many of the young women affected are not yet sexually active.Related Questions
Vanishing Twin Syndrome - Answers to Frequently Asked Questi...Just as there is no clear attributable cause for most miscarriages, there aren't always reasons or explanations for the loss of a fetus in a multiple pregnancy. In some cases, the fetus is inviable due to chromosomal or placental abnormalities. Some studies suggest that because these abnormalities are more common in older women, Vanishing Twin Syndrome occurs more often in mothers of advanced age.Related Questions
Psoriasis Help Organisation - Online ForumriaY, ivano, SueB, Lianne, Annie G, margurita_simpson, david_8, sandy1, FelicityHelen, SPOTTY MUNCHKIN, Cy, elgrande, aimee26, GyZim, Aginoth, stewart_h, veronique, jjoblogs1, lkm, akesingland, Scofz, mattellie, Diletta The material has been extracted from Psoriasis at your fingertips by Dr Tim Mitchell & Rebecca Penzer (Class Publishing). Permission has been granted by Class Publishing to reproduce these extracts from their bookRelated Questions
What is "DES/TDES"?
Leadtek - We make dreams a realityDES (Data Encryption Standard) was originally introduced by NSA (National Security Agency) and IBM, and since then it has become a Federal data encryption standard as defined in FIPS 46-3 (Federal Information Processing Standard). DES works on a 64-bit key data segment, of which 8 bits provide parity. This results in an effective length of 56-bit in total. TDES is a variant on DES, in which the plain text is processed three times with two or three different DES secret keys.
Related QuestionsWhat is triple DES?
Atronic Systems - Dynamic Solutions, True PartnersTriple DES is an internationally recognized authentication and encryption standard to ensure smart card security. The Crystal Web? Cashless System uses the Payflex® smart card operating system from Axalto, which in turn uses TripleDES for authentication and encryption. Knowing that we provide a secure system is of paramount importance to Atronic Systems, and this is one of the ways in which we accomplish this goal. Atronic Systems approaches reporting from two different aspects.
Related QuestionsKiosk Self-Service: FAQ Frequently Asked Questions ArchivesTriple DES (Data Encryption Standard) is the new encryption standard being mandated by Visa and MasterCard. It replaces the existing standard simply known as DES or Single DES. Triple DES refers to the encryption or "scrambling" of the Personal Identification Number (PIN) that the ATM user enters during the ATM transaction process. This encryption is done after the PIN number is entered, but before the ATM requests transaction authorization at the ATM network.Related Questions
Acne causes and what causes acne?
Acne Frequently Asked Questions FAQ.Almost all teenagers get acne at one time or another. You haven't done anything to cause your acne. It's not your fault if you have it. Pimples are caused when oil ducts in the skin get plugged up and then burst, causing redness and swelling. Although there are many myths about acne, the following are the three main factors that cause it. When you begin puberty, certain hormones, called androgens, increase in both males and females.
Related QuestionsAcne Causes - What Causes Breakouts?
Several factors contribute to the development of acne. The primary problem is that the abnormal flaking of cells inside the hair follicle leads to the formation of a plug. The plug can enlarge and even rupture the hair follicle. A ruptured hair follicle spills its contents of oil and debris into the skin where it leads to swelling and causes redness (inflammation).
Related QuestionsWhat causes part distortion?
Eastern Alloys, Inc.Parts may distort as they solidify and cool in the die, or during ejection from the die. These problems are solvable but usually require discussions between the part designer, the tool designer and the die-casting engineer since they involve increasing draft angles etc. However, part distortion is quite often caused by mishandling during press trimming, polishing etc. or when the parts are clamped in jigs for machining, plating or painting.
Related QuestionsWhat causes anorexia?
Anorexia: FAQThe disorder is a complex combination of physical, psychological, and social factors not clearly understood by the medical and psychological communities. The causes of anorexia have been linked to genetics, personality traits, environments, stressors, and biochemical functions.
Related QuestionsWhat causes cancer?
Tennessee Department of Health: Tennessee Cancer RegistryCancer is caused by external factors such as exposure to chemicals and viruses. It is also caused by internal factors such as hormones and inherited cancer genes. These factors may work together or in sequence to start or promote a cancer. Ten years to a lifetime may pass between exposure to these factors and detectable cancer.
Related QuestionsWHAT CAUSES THE SYMPTOMS?
QTsyndrome.ch - Frequently Asked Questions (FAQ)Patients with long QT syndrome develop a very fast heart rhythm disturbance known as "Torsade de pointes". This is a form of ventricular tachycardia. This rhythm is too fast for the heart to beat effectively, so the blood flow to the brain falls precipitously causing the sudden loss of consciousness. In most instances, there is no warning prior to syncope.
Related QuestionsWhat causes obesity?
Obesity FAQ - Special Sections > Weighed Down > The Issues |...Obesity results from eating too many calories and not getting enough physical activity over a long period of time. This balance is affected by genes, metabolism, behavior, environment, culture and socioeconomic status.
Related QuestionsWhat causes osteoporosis?
GDX Bone Resorption Assessment Frequently Asked QuestionsMany factors contribute to bone loss. Small or petite women and women with relatives who have osteoporosis are at greater risk for developing the disease. Medical factors include menstrual irregularities, early menopause, certain diseases, stress and some medications. Lifestyle factors include lack of exercise, cigarette smoking, excessive alcohol consumption and crash dieting, or deficiencies in nutrients such as calcium, magnesium, trace minerals, B vitamins and vitamin D.
Related QuestionsWhat is and what causes melanoma?
FAQMelanoma is a malignancy of melanocytes, special cells in the skin which synthesize skin pigment. It is the most rapidly increasing form of cancer in the US. Although all causes of melanoma are not known with certainty, epidemiologic studies suggest that brief, intense exposure to ultraviolet radiation contributes to the development of melanoma.
Related QuestionsWhat causes rosacea?
Frequently Asked Questions (FAQs) about RosaceaA specific cause has not been determined but it appears that there may be hereditary tendencies. It is believed that the flushing and redness is a result of the blood vessels dilating too easily.
Related QuestionsWhat causes allergy?
Allergy Frequently Asked Questions (FAQ)allergic reaction occurs when your immune system reacts to a foreign substance from the outside world. These foreign substances, normally small proteins, can come from dust mite feces, pollens, molds, and many other natural and man-made objects.
Related QuestionsWHAT CAUSES ECZEMA?
Eczema: Frequently Asked QuestionsThe causes of eczema are many and varied, and depend on the particular type of eczema that a person has. Atopic eczema is thought to be a hereditary condition, being genetically linked. It is proposed that people with atopic eczema are sensitive to allergens in the environment which are harmless to others. In atopy there is an excessive reaction by the immune system producing inflamed, irritated and sore skin. Associated atopic conditions include asthma and hayfever.
Related QuestionsWhat causes SAD?
Seasonal Affective Disorder (SAD), SVCMC; New York NYShorter days of winter and lack of light are considered one cause of seasonal depression, especially for people who move to extreme northern climates, where winter days are very short or seasonal differences in the amount of daylight are extreme.1, 2 However, researchers are studying other possible causes, including disturbances in the body's natural biological clock (circadian rhythms) or problems with the regulation of a brain chemical (neurotransmitter) called serotonin.
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