A child with ADHD who is not treated may fall far behind in school and have difficulty making friends. Family life may be disrupted as well. When ADHD is left untreated, it can cause tension between children and parents. When parents are unable to communicate with their children, they frequently blame themselves. It's really frustrating to feel like you're losing control. Adolescents with ADHD are more likely to be involved in car accidents.  When compared to the general population, adults with untreated ADHD had a higher likelihood of divorce and job loss. Fortunately, there are safe and effective medications that can help adults and children regulate the symptoms of ADHD and avoid the negative consequences.