The patient Qiangqiang knew how to call parents and interact with people when he was one year old, but then gradually regressed, and his eye contact with people became weaker, his facial expression was indifferent, he was easily excited, nervous, restless, had difficulty falling asleep, did not like noise, unwilling to Haircuts, picky eaters, no appetite, no food, sensitive to touch and dull pain; at the age of two and three months, can’t point to the desired items with fingers, can’t distinguish between you, me, him, like puzzles, transportation and animal models, accompanied by severe eczema.
