
Signs of Intellectual Disability in Infants
Disease description:
My nephew is now 8 months old. He generally seems somewhat呆滞 (dazed or unresponsive), has very little facial expression, and interacts very little. I'm worried that he might be mentally retarded. I would like to ask, if a child has low intelligence, what are the typical manifestations?

Intellectual disability in infants is a neurodevelopmental disorder characterized by significantly below-average intellectual and adaptive functioning compared to peers. The following are common manifestations:
1. **Delayed language development**: The infant may be slow to speak simple words or sentences, with language expression skills明显 below the level of peers, and limited abilities in language comprehension and usage.
2. **Poor motor coordination**: The infant may experience delays in motor skill development, such as poor coordination in movements like rolling over, sitting up, and crawling, potentially exhibiting明显 motor delays.
3. **Learning and cognitive difficulties**: Infants may show significant challenges in learning and cognition, such as difficulty understanding simple instructions, lack of self-management skills, and limited problem-solving abilities.
If an infant exhibits any of the above signs, it is recommended to seek medical evaluation as early as possible.