Final answer:
Impairment in social communication, language, and behavior are the three areas required for an ASD diagnosis. Individuals with ASD may experience a range of symptoms, but severity and manifestation can vary widely.
Step-by-step explanation:
To be diagnosed with Autism Spectrum Disorder (ASD), impairment needs to be present in the following three areas: social communication, language, and behavior. Children with autism may exhibit difficulties in making eye contact, reading social cues, and understanding others' emotions. Furthermore, they might engage in repetitive motor behaviors, demonstrate a preoccupation with specific subjects, show a strict adherence to particular rituals, and use language in unique ways. Some individuals with ASD can have comorbid conditions, like epilepsy or intellectual disability, though others may have strong linguistic abilities and do not perceive their way of processing information as a disorder.