ADHD paralysis isn't an official symptom of ADHD, though most people with ADHD have experienced it. Larisa Litvinov, PhD, a senior psychologist in the ADHD and Behavior Disorders Center at the Child Mind Institute, describes it as a phenomenon that happens when multiple challenges related to ADHD collide. For example, many people with ADHD tend to struggle with procrastination, executive function, starting tasks (called task initiation), time management, and planning ahead.