ADHD in Adults Recognizing the Signs and Symptoms of Adult ADHD and What You Can Do About It. Life can be a balancing act for any adult, but if you find yourself constantly late, disorganized, forgetful, and overwhelmed . Adults with ADHD may have difficulty following directions, remembering information, concentrating, organizing tasks, or completing work within time limits. WebMD describes what adult life with ADHD involves, including treatments and ways to manage it. Symptoms and Signs of Adult ADHD. ADD/ADHD affects about 5 percent of children, and more than half carry their symptoms into adulthood.