Patient's question:
7 months ago, for more than three months, there was a period when I slept quite well at night, but as it approached four months and I got sick, I couldn't sleep well anymore. As soon as it got hot, I would get eczema. The scabs on my head didn't fall off much, and when I just closed my eyes, I would keep shaking my head. Once I fell asleep, I wouldn't...Doctor's answer:
A diffuse inhibitory process in the cerebral cortex that allows the cortex to rest and fully recover its function. The amount of sleep a child needs is determined by their age; the younger the child, the more sleep they require. Because newborns have low excitability in their cerebral cortex and weak neuromotor processes, external stimuli are relatively overwhelming. Any external stimulus can quickly suppress cortical excitability, causing them to enter a deep sleep state. Therefore, newborns sleep after being fed and wake up to eat, sleeping for 20 to 22 hours a day.As the child's body and brain continue to grow and develop, sleep time gradually increases. Due to more external stimuli during the day, they stay awake longer. At 2 to 3 months, they sleep about 17 to 18 hours a day; at 3 to 6 months, about 16 to 17 hours a day; at 6 to 12 months, about 14 to 15 hours a day; at 2 to 3 years, about 12 to 14 hours a day; at 4 to 6 years, about 11 to 12 hours a day; and for those over 7 years old, about 9 to 10 hours a day. Each child has individual differences in daily sleep time, with some sleeping much longer and others sleeping a bit less, which has nothing to do with growth and development. Consider a deficiency in trace elements and suggest getting a trace element test done.
The above is advice for the question "Four-month-old baby doesn't sleep well every night." It is hoped to be helpful to you. Wishing you good health!