Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «D»:
DEA: Every prescription written in the United States bears a DEA number, that of the prescribing doctor, the DEA being the Drug Enforcement Administration of the U.S. Department of Justice.
Historically, the DEA's roots go back to the founding in 1930 of the Federal Bureau of Narcotics. During World...
Deafness is defined by partial or complete
hearing loss. Levels of hearing impairment vary from a mild but important loss of sensitivity to a total loss of hearing. Older adults suffer most often from hearing loss. Age-related hearing loss affects 30 to 35 percent of the population betwe...
Deafness and Communication Disorders, Institute
Other Communication Disorders, National Institute
on (NIDCD): One
of the US National Institutes of Health.
The mission of the National Institute on Deafness and Other Communication Disorders is to "conduct and support biomedical research and research training on normal mechanism...
Deafness and keratopachydermia
Deafness and keratopachydermia: Congenital deafness with keratopachydermia and constrictions of fingers and toes. See: Vohwinkel syndrome....
Deafness with goiter
Deafness with goiter: See Pendred syndrome....
Deafness, acquired: The loss of hearing that occurs or develops some time during a person's life but was not present at birth.
Acquired deafness contrasts to congenital deafness which is present at birth.
The distinction between acquired and congenital deafness specifies only the time that the deaf...
Deafness, age-related: See: Presbycusis....
Deafness, congenital: Loss of hearing present at birth.
Congenital deafness contrasts to acquired deafness which occurs after birth.
The distinction between congenital and acquired deafness specifies only the time that the deafness appears. It does not specify whether the cause of the deafness is ge...
Deafness, nonsyndromic: See: Nonsyndromic deafness....
Deafness-ichthyosis-keratitis syndrome: See Keratitis-ichthyosis-deafness syndrome....
Death: 1. The end of life. The cessation of life.
(These common definitions of death ultimately depend upon the definition of life, upon which there is no consensus.)
2. The permanent cessation of all vital bodily functions. (This definition depends upon the definition of "vital bodily functions."...
Death rate: The number of deaths in the population
divided by the average population (or the population at midyear) is the crude death rate.
In 1994, for example, the crude death rate per 1,000 population was 8.8 in the United
States, 7.1 in Australia, etc. A death rate can also be tabulated accordi...
Death rate, infant
Death rate, infant: The number of children dying under a year of age divided by the number of live births that year. The infant death rate is also called the infant mortality rate.
The infant mortality rate is an important measure of the well-being of infants, children, and pregnant women because it...
Death, black: The black plague or the plague. In 14th century Europe,
the victims of the "black plague" had bleeding below the skin (subcutaneous
hemorrhage) which made darkened ("blackened") their bodies. The black death
swept recurrently through Europe, killing half its populat...
DEB (dystrophic epidermolysis bullosa)
DEB (dystrophic epidermolysis bullosa):
See: Dystrophic epidermolysis bullosa....