Medical Glossary

This glossary contains:
19186
medical terms

ADHD




ADHD

Attention-deficit hyperactivity disorder (ADHD) is one of the most commonly diagnosed and controversial mental disorders among children, and is increasingly recognized as afflicting adults as well. Its symptoms include inattention, hyperactivity, and impulsivity.



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Arthritis
Inflammation of a joint, usually accompanied by pain, swelling, and stiffness, and resulting from infection, trauma, degenerative changes, metabolic disturbances, or other causes. Arthritis occurs in various forms, such as the arthritis associated with infections, osteoarthritis, or rheumatoid arthritis. Many forms of vasculitis can also be associated with arthritis.

Atherosclerosis
Also known as arteriosclerosis, atherosclerosis results from the accumulation of cholesterol-laden plaque in artery walls. Plaque accumulation causes a narrowing and a loss of elasticity of the arteries, sometimes referred to as hardening of the arteries.

Allergy
A major defense mounted by the body's immune system against normally harmless substances, or allergens, such as chemicals in pollen, food, bee stings, animal dander, or dust. An allergic reaction is the body's strong reaction to these substances in a person who is sensitive to them. Reactions range from mild to severe, and may include sneezing, a rash, or difficulty breathing (which can be fatal).

Amputation
Amputation is the removal of a body extremity by trauma or surgery. As a surgical measure, it is used to control pain or a disease process in the affected limb, such as malignancy or gangrene.

Ataxia
Ataxia is unsteady and clumsy motion of the limbs or trunk due to a failure of the fine coordination of muscle movements. The cerebellum is the center of the fine coordination of muscle movements, while the information emerging from it is carried to the muscles by the spinal cord and peripheral nerves, respectively. Therefore a disorder in either the spinal cord or in the peripheral nerves can cause ataxia.

ADHD

Autism
A neurological developmental disability that results in limited cognitive abilities: the autistic individual is limited in ability to learn inductively from surrounding events. Social interactions and many kinds of conceptual learning can be strongly limited. At the same time, the autistic individual may be outstandingly good at some kinds of mental manipulations, such as, for example, arithmetical calculations.

Aneurysm
A weakness in the blood vessel wall that balloons out and may rupture at some point. Aneurysms rarely cause symptoms before the rupture, unless they are large. They do not mimic the symptoms of migraine or cluster headache. It is vital to discover them before they rupture and have catastrophic consequences such as paralysis or death.

Agoraphobia
Fear of being in situations from which escape might be difficult or embarrassing, or help might be difficult to obtain, in the event that one should have a panic attack or should feel an acute desire to leave. Such situations often include being in large crowds or “open spaces” (such as shopping malls or stadiums), using public transportation, driving on the freeway, eating in restaurants, or, in severe cases of agoraphobia, going anywhere outside one’s own home. Agoraphobia usually occurs in response to having panic attacks, but it can also develop without panic attacks.

Allergic rhinitis
Allergic rhinitis is a common allergic reaction that causes inflammation of the nose. Symptoms typically include sneezing, congestion, a runny nose, and an itchy nose. Allergic rhinitis may be seasonal or perennial.

Anaphylactic shock
A severe and sometimes life-threatening immune system reaction to an antigen that a person has been previously exposed to. The reaction may include itchy skin, edema, collapsed blood vessels, fainting, and difficulty in breathing.

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This dictionary contains 19186 terms.







dhd / ahd / add / adh / aadhd / addhd / adhhd / adhdd / qdhd / wdhd / sdhd / xdhd / zdhd / aehd / arhd / afhd / avhd / achd / axhd / ashd / awhd / adyd / adud / adjd / adnd / adbd / adgd / adtd / adhe / adhr / adhf / adhv / adhc / adhx / adhs / adhw /