Webster's New World Medical Dictionary

eczema, allergic contact
A red, itchy, weepy
reaction that occurs 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. Also known as
allergic contact dermatitis.
eczema, contact
A localized reaction that
involves redness, itching, and burning that occurs
where the skin has come into contact with an aller-
gen (an allergy-causing substance) or an irritant
such as an acid, a cleaning agent, or another chem-
ical.
eczema, dyshidrotic
Irritation of the skin on the
palms of the hands and the soles of the feet that is
characterized by clear, deep blisters that itch and
burn.
eczema, nummular
Coin-shaped patches of
irritated skin that may be crusted, scaling, and
extremely itchy. Nummular eczema appears most
commonly on the arms, back, buttocks, and lower
legs.
eczema, seborrheic
See 
seborrhea.
ED
Erectile dysfunction.
EDC
Estimated date of confinement. See 
due
date.
edema
The swelling of soft tissues as a result of
excess fluid accumulation. Edema is often most
prominent in the lower legs and feet toward the end
of the day because fluid pools while people maintain
an upright position.
edema, hereditary angioneurotic
Localized
skin swelling that results from an inherited defi-
ciency of the C1 esterase inhibitor protein, which
normally prevents activation of a cascade of proteins
that leads to the occurrence of angioedema. Patients
can develop recurrent attacks of swollen tissues,
pain in the abdomen, and swelling of the voice box
(larynx) that can compromise breathing. The diag-
nosis is confirmed when abnormally low levels of C1