Which disorder is characterized by inattention, impulsivity, and sometimes hyperactivity?

Attention Deficit Hyperactivity Disorder (ADHD) is clearly defined by its core symptoms of inattention, impulsivity, and in many cases, hyperactivity. Individuals with ADHD often face challenges in maintaining focus on tasks, following through with instructions, and regulating their impulses, which can lead to difficulties in various settings, including school and home.

Inattention manifests as difficulty in sustaining attention, being easily distracted, and forgetfulness in daily activities. Impulsivity can lead to hasty actions without considering the consequences, and hyperactivity involves an excess of movement and difficulty in remaining seated or quiet.

The other disorders listed do not share these specific characteristics. Dyscalculia is primarily related to difficulties with mathematics, while dyslexia is centered on challenges with reading and language processing. Other Health Impairments may include various conditions but do not specifically encapsulate the combination of inattention and impulsivity with hyperactivity as seen in ADHD. Thus, the description of ADHD accurately encompasses the disorder's primary symptoms, making it the correct answer.