Periodic laugh / tears. What can be the cause?

My son exhibits this behavior several times a week: he starts laughing with no apparent reason, it looks like some sort of euphoria laugh as if he took drugs. Then after 20 minutes he bursts into tears and keeps doing that for like another 20 minutes. We consulted about this behavior with our local doctors but all they say something like "Well, what did you want? He has autism." For some reason, it seems to me that there could be other causes for that behavior though. Has anyone experienced something like that?

Parents
  • I hope it's not too late but my 14 y.o girl is experiencing that too. She will be laughing and become loud and risky like she's high. She won't be able to sit still either so she'll be buzzing with energy walking around. How did you cope? Any ideas?

Reply
  • I hope it's not too late but my 14 y.o girl is experiencing that too. She will be laughing and become loud and risky like she's high. She won't be able to sit still either so she'll be buzzing with energy walking around. How did you cope? Any ideas?

Children
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