A small white spot on the neck may be left after skin allergy, that is, hypopigmentation after inflammation, generally there is no big problem, continue to observe, no special treatment is needed, generally about six months can be restored to normal skin color. If the patient wants to quickly return to normal skin color, he can use some emollient creams, such as vitamin E ointment or heparin sodium ointment, Xylitol and other ointments with restorative effects. If you are worried about the condition, such as whether it is vitiligo, you can identify it with the help of instruments, such as Woo’s lamp, dermoscopy, skin CT, etc. These are painless, non-invasive, non-radiation, and are some of the particularly safe tests.