Nowadays, children are generally taller than me. The girl I saw in the clinic was half a head taller than me at age 13. When the child was 6 years old, she developed hemiplegia and could not speak for a week. She was examined in all aspects at the local hospital, and a bone puncture could only be considered viral encephalitis, but there was no very clear diagnosis at that time. Now the child has frequent headaches, weakness in one limb, numbness in one hand especially when eating spicy food, and a slower writing speed than others. The child’s symptoms at the age of 6 are also related to smog, not caused by encephalitis, but smog is very rare, and the medical level was not as good as it is now, so the diagnosis cannot be confirmed in time. However, because of the poor cooperation of children, most of them need general anesthesia, and considering the risk of anesthesia and the lack of oxygen due to crying of children, we usually try not to give children imaging examinations.