Atrophy: A wasting away or diminution. Muscle atrophy is a decrease in muscle mass, often due to extended immobility.
Atropine: A drug, made from the belladonna plant, that is administered via injection, eye drops, or in oral form to relax muscles by inhibiting nerve responses.
- Atropine psychosis
Atropine psychosis: A syndrome characterized by dry mouth, blurred vision, forgetfulness, and difficulty with urination triggered by atropine and the anticholinergic effects of other drugs, particularly anti-psychotic medications. Treatment is to reduce or stop the medication.
ATSDR: The Agency for Toxic Substances and Disease Registry, a part of the U.S. Department of Health and Human Services under the Public Health Service that works with states and other federal agencies to prevent exposure to hazardous substances from waste sites. The agency conducts public health assessments, health studies, surveillance activities, and health education […]
Attention: The ability to focus selectively on a selected stimulus, sustaining that focus and shifting it at will. The ability to concentrate. “Everyone knows what attention is,” wrote William James in his Principles of Psychology (1890). “It is the taking possession by the mind in clear and vivid form, of one out of what seem […]
- Attention deficit disorder (ADD)
Attention deficit disorder (ADD): An inability to control behavior due to difficulty in processing neural stimuli. In November, 1998 the National Institutes of Health (NIH) issued a consensus report developed by a panel of experts. The panel concluded that: Ritalin and other therapies may correct classroom behavior problems but there is no evidence that this […]