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My child occasionally experiences sudden anxiety for no apparent reason. I have the impression that this process is independent of external factors, because the anxiety comes on suddenly, even when the child has been experiencing positive emotions before. We have tried as a family to track down any clues. But the attacks started in different weather and at meal times, at bedtime, at school and in the toilet, so there is no way to connect external factors with this situation. We are quite puzzled and because we have had bad experiences with doctors in our region we are in no hurry to go to just anyone.