Psychoactive substances: A class of substances that affect people's mood, emotions, and behavior, change their state of consciousness, and can cause dependence. The purpose of people using such substances is to maintain certain special psychological and physiological states

Drugs: Chemical substances banned from society

Substance use disorder: a harmful substance use pattern that results in obvious adverse consequences due to repeated use of substances, and the patient has obvious symptoms of substance intoxication or withdrawal

Tolerability: Patients must increase the dosage to obtain the desired effect, and the original dosage is not enough

Withdrawal state: Special psychophysiological symptoms that occur after stopping the use of a substance or reducing the dose or using an antagonist to occupy the receptor.

Substance intoxication: psychological reactions such as getting drunk or getting excited caused by ingesting substances

tobacco use

Substance taken orally

direct injection of substances

Other routes: intranasal, intraoral delivery

Characteristics: Loss of control over substance use, impairment in daily living and social functioning; depression, anxiety, psychotic symptoms

biological susceptibility

neurobiological factors

psychological factors

sociocultural factors

Biological susceptibility: genetic, genetic susceptibility

psychosocial factors

Drug treatment: disulfiram (antabuse), cypromethazine

psychotherapy

Drug resistance: related to the degree of physiological dependence. After repeated use, larger doses must be taken to achieve the same effect.

withdrawal symptoms

Symptoms at any stage will disappear immediately if you smoke again

Detoxification treatment stage - substitution therapy, free substitution therapy

Prevent relapse

Psychological detoxification——Cognitive therapy, behavioral therapy

Build a detox community

Overview: nicotine, the number of smokers, who smokes in China, and the dangers of smoking

The role of nicotine

nicotine dependence

Harms of smoking

quit smoking

amphetamines

cocaine