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Chapters

0:00 Introduction
1:08 Risk factors
1:51 symptoms of Substance- Related Disorder
2:43 Treatment for Substance- Related Disorder




Substance-related disorders, also known as substance use disorders, can lead to large societal problems. It is found to be greatest in individuals ages 18–25, with a higher likelihood occurring in men compared to women, and urban residents compared to rural residents. On average, general medical facilities hold 20% of patients with substance-related disorders, possibly leading to psychiatric disorders later on. Over 50% of individuals with substance-related disorders will often have a "dual diagnosis," where they are diagnosed with the substance use, as well as a psychiatric diagnosis, the most common being major depression, personality disorder, anxiety disorders, and dysthymia.[1]

Substance use, also known as drug use, is a patterned use of a substance (drug) in which the user consumes the substance in amounts or with methods which are harmful to themselves or others. The drugs used are often associated with levels of substance intoxication that alter judgment, perception, attention and physical control, not related with medical effects. It is often thought that the main used substances are illegal drugs and alcohol; however it is becoming more common that prescription drugs and tobacco are a prevalent problem.[2] Common symptoms include:

Sudden changes in behaviour – may engage in secretive or suspicious behaviour
Mood changes – anger towards others, paranoia and little care shown about themselves or their future
Problems with work or school – lack of attendance
Changes in eating and sleeping habits
Changes in friendship groups and poor family relationships
A sudden unexplained change in financial needs – leading to borrowing/stealing money

There are many more symptoms such as physical and psychological changes, though this is often dependent on which substance is being used. It is, however, common that people who use substances will experience unpleasant withdrawal symptoms if the drug is taken away from them.[3][4]

It is also reported that others have strong cravings even after they have not used the drug for a long period of time. This is called being "clean". To determine how the brain triggers these cravings, multiple tests have been done on mice.[5] It is also now thought that these cravings can be explained by substance-related disorders as a subcategory of personality disorders as classified by the DSM-5.