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How to deal with autistic children's meltdowns
Act in a calm and reassuring manner.
During a meltdown, the child may feel confused, agitated, frustrated, overwhelmed, or scared-i.e. experiencing all sorts of negative emotions.
Therefore, shouting, yelling, or hitting them will do nothing to help in this situation.
It is far more likely to aggravate the situation. During a meltdown, a child most needs the opportunity to relax.