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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «D»:

  1. Dementia, hereditary multi-infarct Dementia, hereditary multi-infarct
    Dementia, hereditary multi-infarct: See CADASIL....
  2. Dementia, MELAS Dementia, MELAS
    Dementia, MELAS: MELAS is the acronym for Mitochondrial Encephalopathy, Lactic Acidosis, and Strokelike episodes. MELAS is a form of dementia. It is caused by mutations in the genetic material (DNA) in the mitochondria. While most of our DNA is in the chromosomes in the cell nucleus, another importa...
  3. Dementia, multi-infarct Dementia, multi-infarct
    Dementia, multi-infarct: See Vascular dementia....
  4. Dementia, vascular Dementia, vascular
    Dementia, vascular: See Vascular dementia....
  5. Demonophobia Demonophobia
    Demonophobia: An abnormal and persistent fear of evil supernatural beings in persons who believe such beings exist and roam freely to cause harm. Those who suffer from this phobia realize their fear is excessive or irrational. Nevertheless, they become unduly anxious when discussing demons, when ven...
  6. Demulcent Demulcent
    Demulcent: Soothing. The word "demulcent" comes from the Latin verb, "demulcere" meaning "to caress." Something that is demulcent is caressing. The term "demulcent" refers to an agent, such as an oil, that forms a soothing film when administered onto the surface of a mucous membrane. A demulcent is...
  7. Demyelination Demyelination
    Demyelination: A degenerative process that erodes away the myelin sheath that normally protects nerve fibers. Demyelination exposes these fibers and appears to cause problems in nerve impulse conduction that may affect many physical systems. Demyelinization is seen in a number of diseases, part...
  8. Dendrite Dendrite
    Dendrite: A short arm-like protuberance from a nerve cell (a neuron). Dendrites from neurons next to one another are tipped by synapses (tiny transmitters and receivers for chemical messages between the cells). The word "dendrite" means "branched like a tree." It comes from the Greek "dendron" (tre...
  9. Dendritic Dendritic
    Dendritic: Referring to a dendrite, a short arm-like protuberance from a nerve cell (a neuron). Dendrites from neurons next to one another are tipped by synapses (tiny transmitters and receivers for chemical messages between the cells). The word "dendritic" means "branched like a tree." It comes fro...
  10. Dendritic cell Dendritic cell
    Dendritic cell: A special type of cell that is a key regulator of the immune system, acting as a professional antigen-presenting cell (APC) capable of activating naïve T cells and stimulating the growth and differentiation of B cells. Dendritic cells are found, for example, in the lymph nodes and ...
  11. Denervate Denervate
    Denervate: To deprive of the nerve supply. Denervate is the opposite of innervate....
  12. Denervation Denervation
    Denervation: Loss of nerve supply. There are many causes of denervation. Denervation may be due to a disease as, for example, in polio where the death of motor neurons causes the denervation of muscle fibers. Denervation may be due to a chemical (such as botox) or physical injury or interruption of ...
  13. Dengue Dengue
    Dengue: Also known as Dengue fever, an acute mosquito-borne viral illness of sudden onset that usually follows a benign course with headache, fever, prostration, severe joint and muscle pain, swollen glands (lymphadenopathy) and rash. The presence (the "dengue triad") of fever, rash, and headac...
  14. Dengue fever Dengue fever
    Dengue fever: An acute mosquito- borne viral illness of sudden onset that usually follows a benign course with headache, fever, prostration, severe joint and muscle pain, swollen glands (lymphadenopathy) and rash. The presence (the "dengue triad") of fever, rash, and headache (and other pains)...
  15. Dengue hemorrhagic fever (DHF) Dengue hemorrhagic fever (DHF)
    Dengue hemorrhagic fever (DHF): A syndrome due to the dengue virus that tends to affect children under 10, causing abdominal pain, hemorrhage (bleeding) and circulatory collapse (shock). DHF starts abruptly with high continuous fever and headache plus respiratory and intestinal symptoms with so...