What is the reason for white hair on a baby's head?

Patient's question:

A child just born doesn't know what's going on, there are always red spots on their body, and they are spitting up milk. Please ask what's wrong with the baby having white hair on their head

Doctor's answer:

Hello, having a few strands of white hair occasionally is fine, as it is caused by pigment loss. However, if the number keeps increasing, it should be a cause for concern.
Causes of white hair:
(1) Poor nutrition: Lack of protein, lack of vitamin B12, copper deficiency, iron deficiency, zinc deficiency
(2) Diseases: Albinism, phenylketonuria, Fanconi syndrome, pernicious anemia, thyroiditis, vitiligo