Mental retardation and developmental delay in infants are mainly characterized by delayed gross motor development, fine motor movement of the hands, reduced grasping ability, and backwardness in responding to people and objects.
Mental retardation is not usually evident in infants and toddlers, but is often characterized by developmental delay. The main sign of developmental delay is the delay in gross motor development, such as rolling over, sitting, crawling, standing and walking.
In addition, the ability to grasp hands and fine motor skills may be poor. Reactions to people or objects may be poor or inconsistent, and later on, language functions may be delayed.
In the case of infant developmental delay, it is necessary to go to the hospital in a timely manner and have regular pediatric examinations. If necessary, a comprehensive rehabilitation program should be considered as soon as possible.