After the baby eczema is well, the skin whitening situation is generally due to the baby eczema local primary rash, it leads to local melanocytes have temporary loss, so the formation of temporary pigment loss spot. This is very different from vitiligo, from the perspective of pathology, can be said to be a world of difference. So if this is the case, parents are advised not to worry because the post-inflammatory depigmentation spot is a temporary situation that will generally recover slowly within a month to six months. But since it is also a pigment loss disease, it needs to be distinguished from vitiligo, and there is also a disease called lichen planus in dermatology. When lichen planus grows on the body, it sometimes appears as white patches of depigmentation, but this disease is essentially a fungal infection. Therefore, the diagnosis of these three conditions needs to be differentiated for the hypopigmented patches on babies.