How to deal with children's frequent tics

Patient's question:

Today, my son is 48 days old. Since he was born, he has been twitching constantly, especially when sleeping. Every time he twitches, his hands and feet jerk violently, and then he wakes up. Not during deep sleep at night, he wakes up almost every 10-20 minutes. The twitching is mild at first, just a few quick breaths, and he wakes up soon after falling asleep. In the past few nights, he has been crying for a while before falling asleep every night, and no matter how I try to comfort him, it doesn't work. When I checked, there were no abnormalities. Sometimes he wakes up in the middle of the night and cries for a while too. When he was born, the doctor said it was a physiological reflex (but I haven't seen other babies be this severe), and now he's 48 days old, and it's still the same. It's affecting

Doctor's answer:

Analysis of the condition: Hello! A newborn's nervous system development is not yet complete, making them prone to generalized responses to external stimuli. When a newborn hears unfamiliar sounds, they often experience whole-body tremors, with limbs extended in an embrace-like posture, which is a generalized response to the stimulus. You can try gently touching any part of the baby, and their reaction will almost always be the same—limbs extended and quickly flexing towards the torso. Jiggling of the jaw is also a sign of a generalized response and is not a seizure. There is no need to be overly anxious about it.
Recommendations: If the above symptoms are not present, but the mother had insufficient intake of vitamin D and calcium during pregnancy, the newborn may have hypocalcemia. In the early stages of the condition, the baby may also appear restless during sleep. In such cases, you can supplement the baby with vitamin D and gluconate calcium to correct the imbalance.