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Medical Dictionary Terms Beginning with D
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Deoxyribonucleic acid (DNA)
Deoxyribonucleic acid (DNA): The molecule that encodes the genetic information. DNA is a double-stranded molecule held together by weak bonds between base pairs of nucleotides to form a double helix. The four nucleotides in DNA contain the bases:more detail info...
Department of Energy (DOE).
Department of Energy (DOE). One of the U.S. government agencies contributing to the Human Genome Project.more detail info...
Depression
Depression: Low spirits; dejection. Symptoms of depression include apathy, anorexia, lack of emotional expression (flat affect), social withdrawal and fatigue. Prevalent types of depression are major depression, dysthymia, and bipolar disorder. Some tymore detail info...
Depression, bipolar
Depression, bipolar: Formerly called manic- depressive illness. Not nearly as prevalent as other forms of depressive disorders, bipolar disorder involves cycles of depression and elation or mania. Sometimes the mood switches are dramatic and rapid, butmore detail info...
Depression, dysthmia
Depression, dysthmia: A less severe type of depression, dysthymia involves long-term chronic symptoms that do not disable, but keep one from functioning at &full steam& or from feeling good. Sometimes people with dysthymia also experience majmore detail info...
Depression, major
Depression, major: Major depression is manifested by a combination of symptoms (see Depression, symptoms of) that interfere with the ability to work, sleep, eat, and enjoy once pleasurable activities. These disabling episodes of depression can occur onmore detail info...
Depression, winter
Depression, winter: Depression that tends to occur (and recur) as the days grow shorter in the fall and winter. It is believed that affected persons react adversely to the decreasing amounts of light and the colder temperatures as the fall and winter promore detail info...
DercumÆs disease
DercumÆs disease: Also called adiposis dolorosa and characterized by fatty tumors beneath the skin. Named for the late Philadelphia neurologist Francis X. Dercum.more detail info...
Dermatitis
Dermatitis: Inflammation of the skin.more detail info...
Dermatitis and diarrhea, zinc deficiency
Dermatitis and diarrhea, zinc deficiency:Among the consequences of zinc deficiency, dermatitis (skin inflammation) and diarrhea are particularly prominent features. A genetic disease called acrodermatitis enteropathica in which there is impaired zimore detail info...
Dermatologic
Dermatologic: Having to do with the skin.more detail info...
Dermatologist
Dermatologist: A doctor who specializes in the diagnosis and treatment of skin problems.more detail info...
Dermatome
Dermatome: (1) A localized area of skin that is has its sensation via a single nerve from a single nerve root of the spinal cord. Shingles (herpes zoster) typically affects one or several isolated dermatomes. (2) A dermatome is also a cutting instrumenmore detail info...
Dermatomyositis
Dermatomyositis: Dermatomyositis is a chronic inflammatory disease of muscle which is associated with patches of slightly raised reddish or scaly rash. The rash can be on the bridge of the nose, around the eyes, or on sun-exposed areas of the neck andmore detail info...
Dermatopathy
Dermatopathy: Any disease of the skin. Synonymous with dermopathy.more detail info...
Dermatophytic onychomycosis
Dermatophytic onychomycosis: Ringworm of the nail, the most common fungus infection of the nails (onychomycosis). Onychomycosis makes the nails look white and opaque, thickened, and brittle. Older women (perhaps because estrogen deficiency may increasemore detail info...
Dermis
Dermis: The lower or inner layer of the two main layers of cells that make up the skin.more detail info...
Dermoid
Dermoid: See: Dermoid cyst of the ovarymore detail info...
Dermoid cyst of the ovary
Dermoid cyst of the ovary: Tumors that develop from a totipotential germ cell (a primary oocyte) retained within the ovary. Being totipotential, that cell can give rise to all orders of cells necessary to form mature tissues and often recognizable strumore detail info...
Dermopathy
Dermopathy: Any disease of the skin. Synonymous with dermatopathy.more detail info...