There are various behavioural disorders that can affect children and young people with the five most common being:
Attention deficit hyperactivity disorder (ADHD) - Common in both children and adults, ADHD presents in mood swings, impulsivity, short attention span, getting easily frustrated and inability to manage everyday tasks. Later in life, if untreated, ADHD can lead to trouble keeping a job, financial problems, unstable relationships, and substance abuse.  Obsessive-compulsive disorder (OCD) - People suffering from OCD experience uncontrollable, intrusive thoughts, actions and impulses. These are chronic, overwhelming and sometimes - debilitating. Such obsessions can include a fear of germs, the excessive need to keep things in order, unwanted sexual or aggressive thoughts and severe doubts.  Conduct disorder - Characterised by antisocial behaviours, difficulty following rules, and lack of empathy or remorse. Conduct disorders usually appear first in adolescence (around the age of 16) and can manifest as behaviours, such as stealing, bullying, destruction of property and starting fights.  Oppositional defiant disorder (ODD) - When childhood tantrums are transferred into adulthood they can result in general feelings of anger and misunderstanding, dislike for authority figures and defensive reaction to negative feedback. The first symptoms of ODD appear in childhood in behaviours, such as intentionally upsetting others, non-compliance with rules and excessive arguing. Behavioural addiction - Addiction occurs when the brain builds an unhealthy association between a certain behaviour and pleasure. People can be addicted to a number of things such as gambling, sex, video games, plastic surgery and binge eating