ADHD was long considered a childhood disease that would resolve itself until adulthood. However, in adults affected, reduced alertness usually persists.

Motor restlessness or hyperactivity, which is particularly pronounced in childhood, usually decreases in adolescence and adulthood. Many ADHD patients still feel restless and driven inside as adults. It is true that impulsivity is often reduced in adults affected by ADHD. However, they often have difficulty waiting for things to happen or thinking through spontaneous ideas in more detail. There is not one symptom that indicates a possible illness. Rather, it is a combination of symptoms and signs that are typical of the disease. The portal therefore lists the following warning signs that are associated with a possible ADHD disorder: Distractibility, problems concentrating, and a feeling of chaos in the head. Rapid and violent emotional and mood swings. Lack of daily planning (working without a to-do list) (e.g., "Procrastination" or "lack of concentration). Frequently changing posture, constantly being in motion.