1 Eczema is not a single disease but a reaction pattern of the skin produced by a number conditions. 2  Atopic dermatitis, a common causes of eczema, is more prevalent in those with asthma and hay fever. 3  Eczema appears as small blisters that can weep and ooze, or as crusted, thickened plaques of skin.
concatenation (kÉnËkÃ¦tÉªËneÉªÊÉn) n 1. a series of interconnected events, concepts, etc 2. the act of linking together or the state of being joined 3. (Logic) logic a function that forms a single string of symbols from two given strings by placing the second after the first.
In logic and mathematics, or is the truth-functional operator of (inclusive) disjunction, also known as alternation; the or of a set of operands is true if and only if one or more of its operands is true. The logical connective that represents this operator is typically written as â¨ or +.