Why does an 8-month-old child keep biting their lower lip with their upper lip?

Patient's question:

A 6-month-old baby cannot lift their head, can roll over, has a normal appetite, and shows no significant abnormalities, but sometimes they shake. Why does an 8-month-old child bite their upper lip with their lower lip?

Doctor's answer:

The behavior of a baby biting their own lips is essentially caused by a lack of security. This physical signal from the baby indicates that she desperately needs a sense of security. Therefore, parents should first provide their child with enough security.
If the child is very young, under the age of three, this may be a result of a lack of vitamin D, which is also commonly referred to as calcium deficiency. In medical terms, this is known as hypocalcemic seizures. This is because calcium absorption relies on vitamin D. In some cases, a child may not be truly lacking in calcium but rather in vitamin D, which promotes calcium absorption, or in adequate sunlight exposure.
The symptoms of hypocalcemic seizures include twitching of the hands and feet during sleep, or sudden waking during sleep. Additionally, some infants with calcium deficiency may develop (a condition where the hair on the back of the head, where they rest their heads, is thinner than on other parts of the scalp).
The treatment involves taking (a medication that combines vitamin D and calcium) once a day at 9 p.m., as this is the peak time for calcium absorption. It is best to consult a doctor for a definitive diagnosis.

📌 Related Posts