Attention Deficit/Hyperactivity Disorder (ADHD) is characterized by which symptoms?

Attention Deficit/Hyperactivity Disorder (ADHD) is primarily characterized by symptoms related to attention, hyperactivity, and impulsiveness. Individuals with ADHD often struggle with sustaining attention, which can manifest as difficulty focusing on tasks or following through on projects. Hyperactivity refers to excessive movement or an inability to stay still, which can affect a person's ability to engage in quiet activities. Impulsiveness involves acting without thinking, leading to hasty decisions or interruptions in conversations.

These core symptoms are fundamental to the diagnosis of ADHD and distinguish it from other behavioral and mental health conditions. The other choices describe symptoms that may relate to other disorders, such as chronic fatigue and dizziness, which are not relevant to ADHD, or emotional instability and depression, which are associated more closely with mood disorders rather than the specific attention-related challenges characterizing ADHD.