Most people who abuse drugs abuse more than one drug?

Drug abuse is common in people suffering from Psychological disorders (depression, anxiety, ADHD) , people facing adversity in life and increased stress levels or responsibilities they feel unable to manage, and people who have experienced trauma such as sexual, physical, or emotional abuse. Grief also can cause someone to abuse drugs.

People with certain personality traits such as impulsivity are more prone to use drugs, though this does not occur in every case.