Causes of autism Metabolic disorders: congenital metabolic disorders such as phenylketonuria cause dysfunction and impairment of brain cells, which can affect the function of neural messaging in the brain and cause autism. Genetic factors: In 20% of autistic individuals, his family can be found with intelligence deficits, delayed language development and similar autism. In addition, about 10% of boys with autism have chromosomal fragility disorder. Viral infections during pregnancy: A woman may suffer from a measles or influenza virus infection during pregnancy, which can cause autism by damaging the developing brain of the fetus. Brain injury: Factors such as distress miscarriage during pregnancy that results in underdevelopment of the brain, premature birth, obstructed labor during delivery, neonatal brain injury, and brain injury to the infant due to infections such as encephalitis and meningitis may all increase the chance of autism. There are of course other reasons that have been discussed, but none of them are definitive. First, people who are conceited tend to exaggerate their own abilities and do not accept the reasonable and correct opinions of others. Secondly, conceit can make oneself think that one’s grasp of the market is accurate, but in fact it is not, and often lacks objective facts. Third, conceited people like to base their decisions on their own past experience, ignoring the actual situation now. Fourth, conceited people treat other people’s opinions with rejection, always feel that their own insights are far-sighted, others are short-sighted. Fifth, conceited people are good at using a thinking pattern to make decisions, and are not able to choose the appropriate method to make decisions according to the actual situation. Sixth, conceited people just keep their eyes on the new and peculiar things above, thinking that these are the ones with decision-making value, ignoring the long-term interests. Seventh, only focus on their favorite, not willing to listen to the experience of others, always think that with their own power can do things well. Eighth, very like to go to extremes, in the extreme choice of decision-making, survival, but ignore the extreme is often a dead end. Ninth, this category of people are often narrow-minded and selfish. Even if someone else’s decision is reasonable, but for their own benefit will reject. Tenth, always want to use their own approval of the decision to show their status and identity. The decision is just a tool he uses to show his external status, putting the collective interest aside.