[Answered]: Drug abuse refers to the inappropriate, excessive…

Drug abuse refers to the inappropriate, excessive and persistent use of a drug for non-therapeutic purposes. It means the use of a CNS active drug usually by self-medication in a manner that deviates from the acceptable medical and social use in a given society. In other words, the term abuse means self-medication of drugs for non-therapeutic purposes, almost always for altering consciousness. Most noteworthy, long term abuse and misuse of any drugs is harmful and may express various signs and symptoms that direct a mental or physical disease.