In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: Substance abuse , or drug abuse , happens when a person uses a drug over and over again , in ways that hurt their health .
A: 
Substance abuse , also known as drug abuse , is a patterned use of a drug in which the user consumes the substance in amounts or with methods which are harmful to themselves or others , and is a form of substance-related disorder .