What is the reason for a 1.5-year-old baby biting hard and clenching their fists?

Patient's question:

No

Doctor's answer:

The baby is growing quickly, which makes it prone to certain movements, especially during bowel movements. However, it is important to rule out calcium deficiency and intracranial abnormalities. It is recommended to have a brain CT and EEG examination at a local hospital to rule out intracranial abnormalities. Only after the cause is identified can it be determined whether treatment is necessary. Although there is a possibility of calcium deficiency one week after birth, this possibility is relatively small.