Explain the following with reference to drug/alcohol abuse :
(a) Addiction, (b) dependence and (c) withdrawal symptoms.
(a) Addiction - ferquent use of drug/ alcohol leads to increase in level of tolerance of receptors present in our bodu, thus making these receptors respond to only higer doses of drugs.
(b) Dependence - Due to inherent addictive nature / its psychological attachement to drugs / alcohol and are unable to live without them.
(c) Withdrawal sndrome - When a person is taking drugs / alcohol regulatory and the intake of drugs is abruptly discontinued it leads to various characteristic symptoms.