Is it normal for a six-month-old child to just have one tooth?

Patient's question:

No

Doctor's answer:

Hello, based on your description, it is likely caused by vitamin D deficiency, which manifests as bald spots on the head, sparse hair, and night-time crying and irritability. In severe cases, it can lead to skeletal deformities. After the child is born, they should be given fish oil consistently for the first two weeks and continue until the age of two. It is recommended to give the baby a vitamin D injection and then switch to oral fish oil after one month, with Eiko Xin being a suitable option. Make sure to get plenty of sunlight exposure.