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Eczema:
a superficial, allergic, inflammatory process involving the skin; characterized acutely by redness, itching, oozing, crusting, and chronically by scaling, thickening, and discolouration.
Edema:
demonstrable accumulation of excessive fluid in body tissues; often refers to fluid in the skin or lungs (pulmonary edema).
Empirical:
based on experience, rather than scientific enquiry.
Enzyme:
a protein capable of accelerating or producing chemical change in a specific substrate.
Eosinophil:
a white blood cell that is involved in some allergic processes (asthma, allergic rhinitis and hay fever).
Epidemiology:
the study of the relationships of factors that determine the frequency and distribution of disease.
Epidermis:
the most superficial layer of skin.
Epinephrine:
a hormone secreted by the adrenal gland that characterizes the "fight or flight" response to acute stress; it increases blood pressure, accelerates heart rate, opens the airways; it can also be administered to help control a severe allergic reaction.
Epipen�:
an auto-injector that administers a fixed amount of epinephrine.
Erythema:
redness of the skin.
Etiology:
the study or theory of the factors that cause disease and their interaction with the host (patient).
Extract:
a concentrated preparation of the protein of any substance to which a person may be sensitive (allergenic extract); used for diagnosis or desensitization therapy.
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