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Health Illustrated Encyclopedia Multimedia Dacryoadenitis 09/03/2012
Dacryoadenitis is an inflammation of the tear-producing gland (lacrimal gland). Causes, incidence, and risk factors: Acute dacryoadenitis is most commonly due to viral or bacterial infection. Common causes include mumps , Epstein-Barr virus , staphylococcus, and gonococcus. Chronic dacryoadenitis is usually due to noninfectious inflammatory disorders. Examples include sarcoidosis , thyroid eye disease, and orbital pseudotumor . Symptoms: Swelling of the outer portion of the upper lid, with possible redness and tenderness Pain in the area of swelling Excess tearing or discharge Swelling of lymph nodes in front of the ear Signs and tests: Dacryoadenitis can be diagnosed by examination of the eyes and lids.
Health Illustrated Encyclopedia Multimedia Deep Venous Thrombosis 01/01/2013
DVT; Blood clot in the legs; Thromboembolism; Post-phlebitic syndrome; Post-thrombotic syndrome Causes: DVTs are most common in adults over age 60. However, they can occur at any age. When a clot breaks off and moves through the bloodstream, this is called an embolism. An embolism can get stuck in the brain, lungs, heart, or other area, leading to severe damage.
Health Illustrated Encyclopedia Multimedia Dehydration 08/15/2011
Dehydration means your body does not have as much water and fluids as it should. Dehydration can be mild, moderate, or severe based on how much of the body's fluid is lost or not replenished. When it is severe, dehydration is a life-threatening emergency. Causes, incidence, and risk factors: Dehydration can be caused by losing too much fluid, not drinking enough water or fluids, or both. Your body may lose too much fluids from: Excessive sweating (for example, from exercise) Excessive urine output , such as with uncontrolled diabetes or diuretic use Fever Vomiting or diarrhea You might not drink enough fluids because of: Loss of appetite due to illness Nausea Sore throat or mouth sores Dehydration in sick children is often a combination of refusing to eat or drink anything and losing fluid from vomiting, diarrhea, or fever.
Health Illustrated Encyclopedia Multimedia Delayed ejaculation 10/09/2012
Ejaculatory incompetence; Sex - delayed ejaculation; Retarded ejaculation Causes, incidence, and risk factors: Most men ejaculate within a few minutes of starting to thrust during intercourse. Men with delayed ejaculation may be unable to ejaculate (for example, during intercourse), or may only be able to ejaculate with great effort after having intercourse for a long time (for example, 30 to 45 minutes).
Health Illustrated Encyclopedia Multimedia Delirium 02/27/2013
Acute confusional state; Acute brain syndrome Causes, incidence, and risk factors: Delirium is most often caused by physical or mental illness and is usually temporary and reversible. Many disorders cause delirium, including conditions that deprive the brain of oxygen or other substances. Causes include: Alcohol or sedative drug withdrawal Drug abuse Electrolyte or other body chemical disturbances Infections such as urinary tract infections or pneumonia (more likely in people who already have brain damage from stroke or dementia ) Poisons Surgery Symptoms: Delirium involves a quick change between mental states (for example, from lethargy to agitation and back to lethargy).
Health Illustrated Encyclopedia Multimedia Delirium tremens 03/20/2011
DTs; Alcohol withdrawal - delirium tremens Causes, incidence, and risk factors: Delirium tremens can occur when you stop drinking alcohol after a period of heavy drinking, especially if you do not eat enough food. Delirium tremens may also be caused by head injury, infection, or illness in people with a history of heavy alcohol use.
Health Illustrated Encyclopedia Multimedia Delta agent (Hepatitis D) 10/08/2012
Hepatitis D virus Causes, incidence, and risk factors: Hepatitis D virus (HDV) is  found only in people who carry the hepatitis B virus. HDV may make a recent (acute) hepatitis B infection or an existing long-term (chronic) hepatitis B liver disease worse. It can even cause symptoms in people who carry hepatitis B virus but who never had symptoms.
Health Illustrated Encyclopedia Multimedia Dementia 09/26/2011
Chronic brain syndrome; Lewy body dementia; DLB; Vascular dementia; Mild cognitive impairment; MCI Causes, incidence, and risk factors: Most types of dementia are nonreversible (degenerative). Nonreversible means the changes in the brain that are causing the dementia cannot be stopped or turned back.
Health Illustrated Encyclopedia Multimedia Dementia due to metabolic causes 02/16/2012
Dementia is a loss of brain function over weeks, months, or years that occurs with certain diseases.   Dementia due to metabolic causes is a loss of brain function that can occur with diabetes, thyroid disease, and other metabolic disorders. The term "metabolic" refers to the physical and chemical processes in the body. Causes, incidence, and risk factors: Metabolic causes of dementia include: Endocrine disorders, such as Addison's disease or Cushing's disease Heavy metal exposure, such as to lead, arsenic, mercury, or manganese Repeat episodes of low blood sugar ( hypoglycemia ), most often seen in people with diabetes who use insulin Hyperparathyroidism , which is very high levels of calcium in the blood Hypothyroidism (low levels of thyroid hormone) or thyrotoxicosis (very high levels of thyroid hormone in the body) Liver cirrhosis Porphyria Nutritional disorders, such as vitamin B1 deficiency, vitamin B12 deficiency, pellagra , or protein-calorie malnutrition Symptoms: Dementia that occurs with metabolic disorders may cause confusion and changes in thinking or reasoning.
Health Illustrated Encyclopedia Multimedia Dengue fever 01/11/2013
O'nyong-nyong fever; Dengue-like disease; Breakbone fever Causes, incidence, and risk factors: Dengue fever is caused by one of four different but related viruses. It is spread by the bite of mosquitoes, most commonly the mosquito Aedes aegypti , which is found in tropic and subtropic regions. This includes parts of: Indonesian archipelago into northeastern Australia South and Central America Southeast Asia Sub-Saharan Africa Some parts of the Caribbean Dengue fever is being seen more often in world travelers.
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