Whether or not a baby falls out of bed has an effect on brain development depends on whether or not there is damage to the brain, and if there is damage, then it will be affected, and vice versa, then it will not be affected. If the baby falls out of bed when he/she happens to land on his/her head, the possibility of craniocerebral injury is very high, such as craniocerebral fracture, epidural hemorrhage, subdural hemorrhage, or even life-threatening cerebral herniation, which may lead to the death of brain cells, which may result in the brain development of the baby being affected. If the brain is not injured, such as landing on the buttocks or the bed is not very high from the ground, this generally does not lead to brain development is affected. If a child falls out of bed, it is recommended to seek medical attention and have a CT scan of the head to determine if there are any injuries.