DEAR READER: Spongiotic dermatitis (SD) is primarily an allergic reaction that causes swelling rather than a rash. It can sometimes be associated with the formation of microvesicles, which are small fluid-filled sacs. Eosinophils are a component of the blood, often found in elevated numbers when an allergic reaction is present, and can generally be used to determine how severe the reaction is.

There are two types of SD. The first is acute SD, which implies that the allergic reaction is occurring at that point in time. The second is chronic SD, which is present for an extended period. This type can also lead to permanent thickening of the outermost layer of the epidermis.

The condition is an allergic reaction most likely due to a skin irritant. Plants, animals, chemicals and much more can cause allergic contact dermatitis. An individual with this diagnosis would probably benefit from the care of a dermatologist or allergist.

To provide related information, I am sending you a copy of my Health Report “Allergies.” Other readers who would like a copy should send a self-addressed stamped No. 10 envelope and a $2 check or money order to Newsletter, P.O. Box 167, Wickliffe, OH 44092. Be sure to mention the title.