Dictionary

error, alpha See alpha error.

error, beta See beta error.

error, type I See alpha error.

error, type II See beta error.

errors of metabolism, inborn See metabolic disease.

ERT Estrogen replacement therapy.

erythema Redness of the skin that results from capillary congestion. Erythema can occur with inflammation, as in sunburn and allergic reactions to drugs.

erythema chronicum migrans The classic initial rash of Lyme disease. In the early phase of erythema chronicum migrans, within hours to weeks of the tick bite, the local skin develops an expanding ring of unraised redness. There may be an outer ring of brighter redness and a central area of clearing. See also Lyme disease.

erythema infectiosum See fifth disease.

erythema nodosum An inflammatory reaction that occurs deep in the skin and is characterized by the presence of tender, red, raised lumps or nodules that range in size from 1 to 5 centimeters and are most commonly located over the shins but occasionally on the arms or other areas. The causes of erythema nodosum include…

erythroblastosis See hemolytic disease of the newborn.

erythrocyanosis Discoloration on the legs that has a bluish or purple hue.