Autism is a spectrum of closely related disorders with a shared core of symptoms. Autism spectrum disorder appears in infancy and early childhood, causing delays in many basic areas of development, such as learning to talk, play, and interact with others.
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As children get older, the red flags for autism become more diverse. There are many warning signs and symptoms, but they typically revolve around impaired social skills, speech and language difficulties, non-verbal communication difficulties, and inflexible behavior. Basic social interaction can be difficult for children with autism spectrum disorder. Many kids on the autism spectrum seem to prefer to live in their own world, aloof and detached from others. Children with autism spectrum disorder have difficulty with speech and language. Often, they start talking late. Children with autism spectrum disorder have trouble picking up on subtle nonverbal cues and using body language. This makes the "give-and-take" of social interaction very difficult. Children with autism spectrum disorder are often restricted, inflexible, and even obsessive in their behaviors, activities, and interests.
ADHD is the most commonly diagnosed mental disorder of children. Children with ADHD may be hyperactive and unable control their impulses. Or they may have trouble paying attention. These behaviors interfere with school and home life. It’s more common in boys than in girls. It’s usually discovered during the early school years, when a child begins to have problems paying attention.
Symptoms are grouped into three categories: