1.1 Introduction
An analgesic, known colloquially as a painkiller, is any natural or synthetic drug that relieves pain (produces analgesia) without causing loss of consciousness, paralysis, or other major impairment of sensory function or nerve impulse conduction. It is different from anesthetics, which produces anesthesia i.e. relives pain by causing loss of consciousness.
This chapter will address the background information that motivated this study, the challenges that prompted it, its aim, and its objectives as a preface to subsequent sections of the study. Additional factors include the study's significance, scope, limitations, and the definition of technical terms.
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