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A substance related disorder refers to a mental health condition characterized by the excessive use of and dependence on substances such as drugs or alcohol, leading to negative consequences in various areas of life.
Tolerance is when an individual needs increasing amounts of a substance to achieve the same desired effect.
Withdrawal refers to physical and psychological symptoms that occur when someone stops using a drug after prolonged use.
Substance Use Disorder (SUD): SUD is another term for substance related disorder, encompassing both mild and severe forms of addiction.