What does brain development lag mean?

Backwardness of brain development usually refers to congenital or acquired factors causing brain hypoplasia in patients, serious diseases that can cause cerebral palsy, brain development lag is generally a relatively vague concept, brain damage, widening of brain gap, widening of lateral ventricle, white matter dysplasia, can be called brain development lag. Generally, it will show mental retardation, motor retardation, brain development problems, which can affect memory, attention, learning and working ability. It can be treated by nutrition nerve, blood circulation improvement, acupuncture, physiotherapy, massage and hot compress functional exercise.