Physical disorder
Including congenital defects, muscle diseases, nervous system diseases, such as Down syndrome, cerebral palsy, autism and so on.
dysnoesia
IQ below 70, manifested as learning difficulties, language development retardation, poor memory and so on.
affective disorder
Including depression, anxiety, obsessive-compulsive disorder, etc., manifested as emotional instability, excitability, self-denial and so on.
abnormal behavior
Including inattention, ADHD, autism spectrum disorder and so on. , showing hyperactivity, impulsiveness, social difficulties, etc.
Other obstacles
Such as hearing impairment, visual impairment and speech impairment.
Every child's situation is different.
The above are some common special children's symptoms, but not all special children will have these symptoms, and each child's situation is different.