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relapse

n. the recurrence of a disorder or disease after a period of improvement or apparent cure. The term also refers to recurrence of substance abuse after a period of abstinence.

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Psychology term of the day

April 16th 2024

volume of distribution

volume of distribution

(symbol: Vd) the amount of a drug in the body in relation to its concentration in various body fluids (e.g., blood, plasma, extracellular fluid). It is expressed by the equation Vd = dose (amount of drug in body)/concentration in body fluid.