Anxiety
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  Anxiety



Anxiety

    A psychological and/or biological response to stress. Feelings of anxiety involve discomforting apprehension or concern, which may include symptoms such as cognitive difficulties, hypersensitivity, dizziness, muscular weakness, breathing difficulties, irregular heart beat, sweating, and sensations of fear. Typically, anxiety is a natural and healthy response to life experiences. However, exaggerated or chronic anxiety often indicates an anxiety disorder. Anxiety can be produced by external stress (exogenous anxiety) or internal stress (endogenous anxiety).

RELATED TERMS
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Psychological
Pertaining to mental life as manifested through language and behavior.

Stress
Mental or physical tension that results from physical, emotional, or chemical causes.

Feelings
Those affective states which can be experienced and have arousing and motivational properties.

Anxiety
A psychological and/or biological response to stress. Feelings of anxiety involve discomforting apprehension or concern, which may include symptoms such as cognitive difficulties, hypersensitivity, dizziness, muscular weakness, breathing difficulties, irregular heart beat, sweating, and sensations of fear. Typically, anxiety is a natural and healthy response to life experiences. However, exaggerated or chronic anxiety often indicates an anxiety disorder. Anxiety can be produced by external stress (exogenous anxiety) or internal stress (endogenous anxiety).

Cognitive
The mental process of knowing, including aspects such as awareness, perception, reasoning, and judgment.

Hypersensitivity
State of reactivity to antigen that is greater than normal for the antigenic challenge; hypersensitivity is the same as allergy and denotes a deleterious outcome rather than a protective one.

Dizziness
Painless head discomfort with many possible causes including disturbances of vision, the brain, balance (vestibular) system of the inner ear, and gastrointestinal system. Dizziness is a medically indistinct term which laypersons use to describe a variety of conditions ranging from lightheadedness, unsteadiness to vertigo.

Breathing
The process of respiration, during which air is inhaled into the lungs through the mouth or nose due to muscle contraction, and then exhaled due to muscle relaxation.

Heart
The hollow, muscular organ responsible for pumping blood through the circulatory system.

Fear
The affective response to an actual current external danger which subsides with the elimination of the threatening condition.

Natural
Not human-induced or manmade.

Chronic
Ongoing or recurring. Chronic medical conditions include diabetes, epilepsy, and chronic fatigue syndrome.



SIMILAR TERMS
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Anxiety disorder
A chronic condition characterized by an excessive and persistent sense of apprehension with physical symptoms such as sweating, palpitations, and feelings of stress. Anxiety disorders have biological and environmental causes.

Anxiety disorder, social
Excessive fear of embarrassment in social situations that is extremely intrusive and can have debilitating effects on personal and professional relationships. Also called social phobia.

Anxiety treatment
A set of medical actions aimed at controlling and fighting anxiety.



PREVIOUS AND NEXT TERMS
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Amenorrhea
The absence of menstrual bleeding in a woman who has not gone through menopause; may be due to such things as prolonged stress, thyroid disorders, excessive exercise, eating disorders, premature ovarian failure and others.

Adenine
A purine base found in RNA and DNA; in double-stranded DNA adenine pairs with the pyrimidine thymine.

Astigmatism
Astigmatism is caused by an uneven or asymmetrical curvature of the cornea, which prevents the eye from focusing clearly at any distance. Astigmatism causes certain amounts of distortion or pitched images because of the uneven bending of the light rays entering the eye.

Amniocentesis
Prenatal diagnostic procedure in which a small amount of amniotic fluid is withdrawn through a needle inserted through a pregnant woman's abdominal wall into the uterus, then examined in a laboratory either to detect genetic abnormalities in a fetus or for other purposes such as father identification.

Acne
Is a common inflammatory disease of the facial skin seen most frequently between the ages of 10 and 25 years and characterized by blackheads, whiteheads and blemishes composed of papules and pustules. Acne is an inflammatory disease of the sebaceous glands, the glands that produce sebum. Acne usually affects the face, back, and chest. In severe cases it can develop into cysts and nodules that can result in scarring. While its cause is unknown, it is most often associated with hormonal activity within teenagers. In severe cases a person should consult with a dermatologist for a specific acne treatment.

Anxiety

Adrenocortical carcinoma
Adrenocortical carcinoma is a carcinoma of the cortex (outer layer) of the adrenal gland. While most tumors of the adrenal cortex are benign (adenomas) and only occasionally cause Cushing's syndrome, the malignant form makes up about 3% of all cortical tumors and requires surgery and sometimes chemotherapy. Excess cortisol production may require suppression with ketoconazole or metyrapone. Production of aldosterone or androgens by carcinomas is extremely rare.

AIDS
A medical condition where the immune system cannot function properly and protect the body from disease. As a result, the body cannot defend itself against infections (like pneumonia). Aids is caused by the Human Immunodifiency Virus (HIV). This virus is spread through direct contact with the blood and body fluids of an infected individual. High-risk activities include unprotected sexual intercourse and intravenous drug use (sharing needles). There is no cure for AIDS; however, research efforts are on going to develop a vaccine.

Anal cancer
Colorectal cancer includes cancerous growths in the colon, rectum and appendix.It is the third most common form of cancer and the second leading cause of death among cancers in the Western world. Many colorectal cancers are thought to arise from polyps in the colon. These mushroom-like growths are usually benign, but some may develop into cancer over time. Diagnosis is by colonoscopy. Therapy is usually through surgery, with many cases also requiring chemotherapy.

Angina
A recurring pain or discomfort in the chest that happens when some part of the heart does not receive enough blood. It is a common symptom of coronary heart disease, which occurs when vessels that carry blood to the heart become narrowed and blocked due to atherosclerosis. Angina feels like a pressing or squeezing pain, usually in the chest under the breast bone, but sometimes in the shoulders, arms, neck, jaws, or back. Angina is usually is brought on by exertion, and relieved within a few minutes by resting or by taking prescribed angina medicine. Commonly called chest pain, heart pain or angina pectoris.

Astrocytoma
A nervous system tumor that grows from astrocytes (astrocytomas are a type of glial cell, glial cells are the supporting cells of the nervous system). They can occur in children and young adults and sometimes in older people. Astrocytomas can sometimes become large before causing symptoms. A diagnosis is made either after surgical resection or with a guided (stereotactic) biopsy. Treatment can consist of surgical excision, radiation therapy or chemotherapy. Some patients with minimal symptoms may be observed with serial imaging studies.

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