Typically, ADHD is diagnosed early in a child’s life, but since the disorder is more commonly diagnosed than it used to be, adults may have it but with no official diagnosis. Here is a list of nine symptoms to be aware of: struggling to get organized, easily distracted, poor listening skills, unable to rest or trouble relaxing, trouble starting a task, issues being on time, outbursts of anger, trouble prioritizing, and reckless driving or traffic accidents.