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Health Encyclopedia Obesity 09/07/2008
Morbid obesity; Fat - obese Causes, incidence, and risk factors: Rates of obesity are climbing.
Health Encyclopedia Obesity hypoventilation syndrome (OHS) 08/10/2007
Pickwickian syndrome Causes, incidence, and risk factors: The exact cause of OHS in unknown. Most (but not all) patients with the syndrome have a form of sleep apnea . OHS is believed to result from both a defect in the brain's control over breathing, and excessive weight (due to obesity) against the chest wall, which makes it hard for a person to take a deep breath.
Health Encyclopedia Obsessive-compulsive disorder 02/06/2008
Obsessive-compulsive neurosis; OCD Causes, incidence, and risk factors: Obsessive-compulsive disorder (OCD) is more common than was once thought. Most people who develop it show symptoms by age 30. There are several theories about the cause of OCD, but none have been confirmed.
Health Encyclopedia Obsessive-compulsive personality disorder 10/17/2008
Personality disorder - obsessive-compulsive Causes, incidence, and risk factors: This disorder tends to occur in families, so genes may be involved. Obsessive-compulsive personality disorder most often occurs in men. Obsessive-compulsive personality disorder should not be confused with obsessive-compulsive disorder (OCD), although the two conditions share some of the same symptoms.
In Depth Patient Reports Obstructive sleep apnea 06/23/2009
Description: An in-depth report on the causes, diagnosis, treatment, and prevention of obstructive sleep apnea. Highlights: Obstructive Sleep Apnea Obstructive sleep apnea is a common sleep disorder. It occurs when tissues in the upper airways come too close to each other during sleep, temporarily blocking the inflow of air. Who Is At Risk Obstructive sleep apnea can develop in anyone at any age but most often occurs in people who are: Overweight Male Age 40 or older Smokers Sleep Apnea Symptoms Symptoms of sleep apnea include: Excessive daytime sleepiness Morning headaches Impaired emotional or mental functioning Snoring Lifestyle Changes Patients with sleep apnea may find these lifestyle changes helpful: Sleep on your side, not your back.
Health Encyclopedia Obstructive sleep apnea 09/11/2008
Sleep apnea - obstructive; Apnea - obstructive sleep apnea syndrome Causes, incidence, and risk factors: Normally, the muscles of the upper part of the throat help keep the airway open and allow air to flow into the lungs. Even though these muscles usually relax during sleep, the upper throat remains open enough to let air pass by.
Health Encyclopedia Obstructive uropathy 01/24/2008
Uropathy - obstructive Causes, incidence, and risk factors: Obstructive uropathy occurs when urine cannot drain through a ureter (a tube that carries urine from the kidneys to the bladder). Urine backs up into the kidney and causes it to become swollen ( hydronephrosis ). Obstructive uropathy is grouped according to whether it affects one or both kidneys and whether it occurs suddenly or is long-term: Chronic unilateral obstructive uropathy - Long-term uropathy that affects one kidney Chronic bilateral obstructive uropathy - Long-term uropathy that affects both kidneys Acute unilateral obstructive uropathy - Sudden uropathy that affects one kidney Acute bilateral obstructive uropathy -Sudden uropathy that affects both kidneys Common causes of obstructive uropathy include the following: Urinary tract stones Ureteral stones Bladder stones Urinary tract tumors Retroperitoneal fibrosis Benign prostatic hyperplasia (enlarged prostate) Tumors of nearby organs Colon cancer Cervical cancer Uterine cancer Any cancer that spreads Idiopathic hydronephrosis of pregnancy Symptoms: Symptoms associated with obstructive uropathy vary depending on whether the obstruction is acute or chronic, whether it is unilateral or bilateral, whether it is complete or partial, and what caused it.
Health Encyclopedia Occupational asthma 05/21/2009
Asthma - occupational exposure; Irritant-induced reactive airways disease Causes, incidence, and risk factors: Many substances in the workplace can cause occupational asthma. The most common triggers are wood dust, grain dust, animal dander, fungi, or other chemicals (especially diisocyanates). Though the actual rate of occurrence of occupational asthma is unknown, it is suspected to cause 2 - 20% of all asthma cases in industrialized nations.
Health Encyclopedia Occupational hearing loss 10/10/2008
Hearing loss - occupational Causes, incidence, and risk factors: Occupational hearing loss is a form of acoustic trauma caused by exposure to vibration or sound. Sound is heard as the ear converts vibration from sound waves into impulses in the nerves of the ear. Hearing and the cochlea Sounds above 90 decibels (dB, a measurement of the loudness or strength of sound vibration) may cause vibration intense enough to damage the inner ear, especially if the sound continues for a long time.
Health Encyclopedia Oil-based paint poisoning 07/17/2009
Paint - oil based - poisoning Poisonous Ingredient: Hydrocarbons are the primary poisonous ingredient in oil paints.
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