Final answer:
Attention-deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by inattention, impulsiveness, low frustration tolerance, and inappropriate activity. It is more common in males and can be diagnosed in childhood. ADHD is often associated with comorbidities such as depression or obsessive-compulsive disorder (OCD).
Step-by-step explanation:
Attention-deficit hyperactivity disorder (ADHD) is a disorder typically marked by inattention, impulsiveness, a low tolerance for frustration, and a great deal of inappropriate activity. It is a neurodevelopmental disorder that affects both children and adults. Individuals with ADHD may have difficulty maintaining attention and controlling impulses.
ADHD is more prevalent in males than females and is often diagnosed in childhood. Some patients with ADHD may not exhibit hyperactivity and instead have a subtype known as attention deficit disorder (ADD). Comorbidity with other disorders such as depression or obsessive-compulsive disorder (OCD) is also common in individuals with ADHD.