Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «E»:
Ectopia cordis: A type of birth defect in the heart is abnormally located. In ectopia cordis, the heart usually
protrudes outside the chest....
Ectopic: In the wrong place. Out of place. An ectopic
kidney, for example, is one that is not in the usual location.
The term "ectopic" comes from the Greek "ektopis" meaning
"displacement" ("ek", out of + "topos", place = out of place). The
first person to use "ectopic" in a medical context was ...
Ectopic pregnancy: A pregnancy that is not in the uterus. The fertilized egg settles and grows in any location other
than the inner lining of the uterus. The large majority (95%) of
ectopic pregnancies occur in the Fallopian tube. However, they can
occur in other locations, such as the ovary, cer...
Ectrodactyly: The congenital absence of all or part of one or more fingers or toes.
The term ectrodactyly has been applied to a variety of malformations of the fingers or toes. It is probably best reserved for:
transverse terminal aphalangia (absence of the last bone in the finger or toe),
Ectromelia virus: A member of the poxvirus family which is a highly virulent natural pathogen of mice that causes mousepox, a severe disease with high mortality rate in mice but does not infect humans. The complete genome sequence of ectromelia virus is known....
Eczema: A particular type of inflammatory reaction of the skin in which there are typically vesicles (tiny blister-like raised areas) in the first stage followed by erythema (reddening),
papules (bumps), and crusting of the skin followed, finally, by lichenification (thickening) ...
Eczema vaccinatum: A common concern with smallpox vaccination involving the implantation of the vaccinia virus from the vaccination into the skin of a person with eczema (atopic dermatitis), sometimes with a fatal outcome. Disrupted skin permits viral implantation. Once the virus is implanted, it sp...
Eczema, allergic contact
Eczema, allergic contact: Also called allergic contact dermatitis, this is a red, itchy, weepy reaction where the skin has come into contact with a substance that the immune system recognizes as foreign, such as poison ivy or certain preservatives in creams and lotions....
Eczema, contact: A localized reaction that includes redness, itching, and burning where the skin has come into contact with an allergen (an allergy-causing substance) or with an irritant such as an acid, a cleaning agent or another chemical....
Eczema, dyshidrotic: Irritation of the skin on the palms of hands and soles of the feet characterized by clear, deep blisters that itch and burn....
Eczema, nummular: Coin-shaped patches of irritated skin-most common on the arms, back, buttocks, and lower legs that may be crusted, scaling, and extremely itchy.
The word "nummular" is taken from the Latin "nummus," a small coin....
Eczema, seborrheic: Yellowish, oily, scaly patches of skin on the scalp, face, and occasionally other parts of the body....
Ed Lewis: See: Lewis, Edward B....
EDC: Estimated date of confinement, the estimated calendar date when
the baby will be born....
Edema: The swelling of soft tissues as a
result of excess water accumulation.
Edema is often more prominent in the lower legs and feet
toward the end of the day as a result of pooling of fluid from the upright position
maintained during the day. Upon awakening from sleeping, patients can have swel...