(a) Addiction- frequent use of drugs / alcohol leads to increase in the level of tolerance
of receptors present in our body , thus making these receptors respond to only higher doses of
drugs / alcohol
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Psychological attachment to certain effects such as euphoria and temporary feeling of well being associated with drugs and alcohol
(b) Dependence - Due to inherent addictive nature / its psychological attachment to drugs / alcohol and are unable to live without them
(c) Withdrawal syndrome-when a person is taking drugs / alcohol regularly and the intake of drugs is abruptly discontinued it leads to various characteristics symptoms ( nausea, anxiety, shakiness, sweating etc.)
