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Encephalitis Learning Center

When the virus enters the bloodstream, it may cause inflammation of brain tissue and surrounding membranes. White blood cells invade the brain tissue as they try to fight off the infection. The brain tissue swells (cerebral edema), which may destr...
Source:ADAM
Date:September 28, 2008
The symptoms of encephalitis range from very mild to very severe and may include: headache fever lethargy (sleepiness, decreased alertness, and fatigue ) malaise nausea and vomiting visual disturbances tremor decreased consciousness (drowsiness, c...
Source:Gale Encyclopedia of Medicine
Symptoms of encephalitis include sudden fever, headache , vomiting, heightened sensitivity to light, stiff neck and back, confusion and impaired judgment, drowsiness, weak muscles, a clumsy and unsteady gait (manner of walking), bulging in the sof...
Source:Gale Encyclopedia of Neurological Disorders
There are more than a dozen viruses that can cause encephalitis, spread by either human-to human contact or by animal bites . Encephalitis may occur with several common viral infections of childhood. Viruses and viral diseases that may cause encep...
Source:Gale Encyclopedia of Children's Health
Fever is the temporary increase in the body's temperature, in response to some disease or illness. A child has a fever when their temperature is at or above one of these levels: 100.4 F (38 C) measured in the bottom (rectally; 99.5 F(37.5 C) measu...
Source:ADAM
Date:December 1, 2009
A fever is any body temperature elevation over 100.4°F (38°C).
Source:Gale Encyclopedia of Children's Health
Fever is defined as an abnormally high body temperature or a regulated rise to a new set point of body temperature. While a body temperature above 100°F(37.8°C) is considered to be a fever by some clinicians, a significant fever is usually defined...
Source:Gale Encyclopedia of Nursing and Allied Health
A fever is any body temperature elevation over 100°F (37.8°C).
Source:Gale Encyclopedia of Medicine
An elevated body temperature. While the standard for normal body temperature is 98.6°F (37°C), normal body temperatures actually fluctuate within a range of one to two degrees, making it impossible to formulate a precise definition of fever based ...
Source:Gale Encyclopedia of Childhood and Adolescence
Normal body temperature varies somewhat from one individual to another but displays a general range and pattern around the "normal" temperature of 98.6°F. Early morning body temperature may be as low as 97°F, and as high as 99.3°F in the afternoon...
Source:Gale Encyclopedia of Cancer
Hyperthermia involves raising the body's core temperature as a means of eradicating tumors. The treatment simulates fever . Some therapies actually bring on fever through the introduction of fever-causing organisms, while others raise body tempera...
Source:Gale Encyclopedia of Alternative Medicine
Hyperthermia is the use of therapeutic heat to treat various cancers on and inside the body.
Source:Gale Encyclopedia of Cancer
A headache is pain or discomfort in the head, scalp, or neck. Serious causes of headaches are extremely rare. Most people with headaches can feel much better by making lifestyle changes, learning ways to relax, and occasionally by taking medicatio...
Source:ADAM
Date:October 27, 2009
A headache is a pain in the head and neck region that may be either a disorder in its own right or a symptom HEADACHE THERAPIES Description Type Acupressure Press pointer fingers beneath cheekbones and parallel to pupils (Stomach 3) for one minute...
Source:Gale Encyclopedia of Alternative Medicine
A headache involves pain in the head which can arise from many disorders or may be a disorder in and of itself.
Source:Gale Encyclopedia of Medicine
A headache involves pain in the head that can arise from many disorders or may be a disorder in and of itself.
Source:Gale Encyclopedia of Children's Health
Headache is a pain in the head and neck region that may be either a disorder in its own right or a symptom of an underlying medical condition or disease. The medical term for headache is cephalalgia. Headaches are one of the most common and univer...
Source:Gale Encyclopedia of Neurological Disorders
A seizure is the physical findings or changes in behavior that occur after an episode of abnormal electrical activity in the brain. See also: Generalized tonic clonic seizure; Partial (focal) seizure; Petit mal (absence) seizure; Epilepsy; Fever (...
Source:ADAM
Date:March 29, 2009
A seizure is a sudden change in behavior characterized by changes in sensory perception (sense of feeling) or motor activity (movement) due to an abnormal firing of nerve cells in the brain. Epilepsy is a condition characterized by recurrent seizu...
Source:Gale Encyclopedia of Neurological Disorders
A seizure is a sudden change in behavior characterized by changes in sensory perception (sense of feeling) or motor activity (movement) due to an abnormal firing of nerve cells in the brain . Epilepsy is a condition characterized by recurrent seiz...
Source:Gale Encyclopedia of Mental Disorders
A temporary series of uncontrollable muscle spasms brought on by unusual electrical activity in the brain. Also known as convulsion, clonic seizure, or tonic-clonic seizure. A seizure is characterized by a sudden episode of un- controllable brain ...
Source:Gale Encyclopedia of Childhood and Adolescence
Coughing is an important way to keep your throat and airways clear. However, excessive coughing may mean you have an underlying disease or disorder. Some coughs are dry, while others are considered productive. A productive cough is one that brings...
Source:ADAM
Date:November 15, 2009
A cough is a forceful release of air from the lungs that can be heard. Coughing protects the respiratory system by clearing it of irritants and secretions.
Source:Gale Encyclopedia of Medicine
A cough is a forceful release of air from the lungs that can be heard. Coughing protects the respiratory system by clearing it of irritants and secretions.
Source:Gale Encyclopedia of Alternative Medicine
A cough is a forceful release of air from the lungs that can be heard. Coughing protects the respiratory system by clearing it of irritants and secretions.
Source:Gale Encyclopedia of Children's Health
Vomiting is the forceful discharge of stomach contents through the mouth.
Source:Gale Encyclopedia of Alternative Medicine
Coma, from the Greek word "koma," meaning deep sleep, is a state of extreme unresponsiveness, in which an individual exhibits no voluntary movement or behavior. Furthermore, in a deep coma, even painful stimuli (actions which, when performed on a ...
Source:Gale Encyclopedia of Medicine
Coma, from the Greek word koma , meaning deep sleep, is a state of extreme unresponsiveness, in which an individual exhibits no voluntary movement or behavior. Furthermore, in a deep coma, even painful stimuli (actions which, when performed on a h...
Source:Gale Encyclopedia of Nursing and Allied Health
Weakness is a reduction in the strength of one or more muscles.
Source:ADAM
Date:August 8, 2009
Confusion is the inability to think with your usual speed or clarity, including feeling disoriented and having difficulty paying attention, remembering, and making decisions.
Source:ADAM
Date:February 13, 2008
Malaise is a generalized feeling of discomfort, illness, or lack of well-being.
Source:ADAM
Date:February 22, 2009
Irritability is an excessive response to stimuli.
Source:ADAM
Date:November 7, 2009
Drowsiness refers to feeling abnormally sleepy during the day. People who are drowsy may fall asleep in inappropriate situations or at inappropriate times. See also: Idiopathic hypersomnia
Source:ADAM
Date:June 1, 2009
Hypersomnia refers to a set of related disorders that involve excessive daytime sleepiness.
Source:Gale Encyclopedia of Mental Disorders
Disorientation, the lack of being able to correctly identify oneself, one's location, or the date and time, is a sign of an altered mental status. An alteration in mental status is often an indication of a serious medical problem, requiring prompt medical attention.
Source:Healthline
Date:December 31, 2007
Neck pain may begin in any of the structures in the neck. These include muscles and nerves as well as spinal vertebrae and the cushioning disks in between. Neck pain may also come from regions near the neck, like the shoulder, jaw, head, and upper...
Source:ADAM
Date:July 10, 2009
Unconsciousness is when a person is unable to respond to people and activities. Often, this is called a coma or being in a comatose state. Other changes in awareness can occur without becoming unconscious. Medically, these are called "altered ment...
Source:ADAM
Date:July 8, 2009
Clumsiness is a common problem in otherwise healthy children with normal intelligence. Motor coordination problems may affect the ability to perform age-appropriate activities, such as dressing and running.
Source:Healthline
Date:December 31, 2007
Uncontrollable movements are slow, twisting, continuous, and involuntary movements of the arms, legs, face, neck, or other parts of the body. See also: Tardive dyskinesia
Source:ADAM
Date:March 26, 2009
Movement disorders are a group of diseases and syndromes affecting the ability to produce and control bodily movements.
Source:Gale Encyclopedia of Children's Health
Mood disorders are mental disorders characterized by periods of depression, sometimes alternating with periods of elevated mood.
Source:Gale Encyclopedia of Children's Health
Research on the connection between a person's mood and the food he or she eats has reveled what many people have long believed, that eating a certain food can influence a person's mood—at least temporarily. Research by Judith Wurtman, a professor ...
Source:Gale Nutrition and Well-Being A to Z
Unsteady gait is a symptom of instability while walking. Problems with walking can be due to disease or injury to the legs, feet, spine, or brain.
Source:Healthline
Date:November 30, 2007
Gait and balance problems exist when a disease process, trauma, or aging result in the inability to control one's center of gravity (COG) over the base of support (BOS) in static or dynamic tasks and environments.
Source:Gale Encyclopedia of Nursing and Allied Health
Gait or walking is a coordinated action of the neuromuscular and musculoskeletal systems. The coordination of muscle contraction , joint movement, and sensory perception allows the human body to move in the environment. Individuals with neuromuscu...
Source:Gale Encyclopedia of Nursing and Allied Health
Gait training refers to helping a patient relearn to walk safely and efficiently. Gait training is usually done by rehabilitation specialists who evaluate the abnormalities in the person's gait and employ such treatments as strengthening and balan...
Source:Gale Encyclopedia of Nursing and Allied Health
A generalized tonic-clonic seizure is a seizure involving the entire body. It is also called a grand mal seizure. Such seizures usually involve muscle rigidity, violent muscle contractions, and loss of consciousness. Generalized tonic-clonic seizu...
Source:ADAM
Date:March 28, 2009
Labored breathing is a medical emergency. Breathing is an automatic process, regulated in the brainstem. Working to breathe is usually a sign of
Source:Healthline
Date:November 30, 2007
Walking abnormalities are unusual and uncontrollable walk patterns, usually caused by diseases or injuries to the legs, feet, brain, spine, or inner ear.
Source:ADAM
Date:March 26, 2009
Problem behavior is often associated with adolescence but may manifest in the very young or in adults. Delinquency, drug use, academic failure, risky sexual behavior, violence, property damage, vandalism and disregard of the rights of others are all problem behaviors.
Source:Healthline
Date:November 30, 2007
Breathing that slows down or stops from any cause is called apnea.
Source:ADAM
Date:January 16, 2009
Photophobia is eye discomfort in bright light.
Source:ADAM
Date:April 13, 2009
Sometimes a person feels hot to touch due to illness or environmental situation that causes elevated core temperature. A compounding factor can be dehydration (lack of fluids.
Source:Healthline
Nausea is the sensation of having an urge to vomit. Vomiting is forcing the contents of the stomach up through the esophagus and out of the mouth.
Source:ADAM
Date:October 20, 2009
Nausea is the sensation of having a queasy stomach or being about to vomit. Vomiting , or emesis, is the expelling of undigested food through the mouth.
Source:Gale Encyclopedia of Alternative Medicine
Chorea refers to brief, repetitive, jerky, or dancelike uncontrolled movements caused by muscle contractions that occur as symptoms of several different disorders. The English word "chorea" itself comes from the Greek word choreia , which means "d...
Source:Gale Encyclopedia of Neurological Disorders
Memory loss (amnesia) is unusual forgetfulness.
Source:ADAM
Date:November 13, 2008
Memory loss can be partial or total. Most memory loss occurs as part of the normal aging process. However, memory loss may also occur as a result of severe emotional trauma or due to brain damage following disease or physical trauma. Memory loss c...
Source:Gale Encyclopedia of Alternative Medicine
Amnesia refers to the loss of memory. Memory loss may result from two-sided (bilateral) damage to parts of Memory loss may result from bilateral damage to the limbic system of the brain responsible for memory storage, processing, and recall. (Illu...
Source:Gale Encyclopedia of Medicine
True muscle weakness means that full effort does not produce a normal muscle contraction or movement. A voluntary muscle contraction is generated when the brain sends a signal through the spinal cord and nerves to a muscle.
Source:Healthline
Date:September 30, 2007
Aggressive behavior is reactionary and impulsive behavior that often results in breaking household rules or the law; aggressive behavior is violent and unpredictable.
Source:Gale Encyclopedia of Children's Health
Many people with cancer experience memory changes—such as mild forgetfulness, an inability to concentrate on more than one task, or more severe memory loss—after undergoing chemotherapy or radiation treatments. In other cases, as in a person with ...
Source:Gale Encyclopedia of Cancer
Nasal congestion refers to a stuffy nose.
Source:ADAM
Date:November 2, 2009
A bulging fontanelle is an outward curving of an infant's soft spot (fontanelle. See also: Fontanelles - sunken
Source:ADAM
Date:March 14, 2009
Chronic motor tic disorder involves quick, uncontrollable movements or vocal outbursts (but not both.
Source:ADAM
Date:February 13, 2008
Amnesia is a partial or total loss of memory.
Source:Gale Encyclopedia of Mental Disorders
Apathy can be defined as an absence or suppression of emotion, feeling, concern or passion. Further, apathy is an indifference to things generally found to be exciting or moving.
Source:Gale Encyclopedia of Mental Disorders
Temper tantrums are disruptive or undesirable behaviors or emotional outbursts displayed in response to unmet needs or desires. They may also refer to an inability to control emotions due to frustration or difficulty expressing a particular need o...
Source:ADAM
Date:October 23, 2007
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