Final answer:
Mental illnesses like ADHD and ASD are neurodevelopmental disorders with diverse symptoms; ADHD results in inattention and impulsivity, whereas ASD includes impaired social skills and repetitive behaviors. Diagnosis follows DSM standards for the betterment of affected individuals.
Step-by-step explanation:
Mental illnesses affect thinking, mood, and social interactions, significantly impacting quality of life and daily living tasks. Disorders such as attention deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) are examples of neurodevelopmental disorders that present with distinct symptoms and challenges. ADHD symptoms include inattention, impulsivity, and possibly hyperactivity, and it is often comorbid with conditions such as depression or OCD. ASD is characterized by impaired social skills, such as difficulty in reading social cues and maintaining eye contact, along with restrictive and repetitive behaviors, and language challenges. These disorders, like all mental illnesses, require careful diagnosis, often according to the DSM guidelines, to manage, treat, and improve the well-being of individuals affected.