A small no can set off a huge reaction, but two children can melt down for completely different reasons. Here are six common root causes behind the struggle to hear no, and what actually helps.

Does your daughter fall apart over a friend's unanswered message or a teacher's small correction? It might not be "oversensitivity" — it could be Rejection Sensitivity Dysphoria (RSD). Find out what RSD is, how it shows up differently in girls and teens with ADHD and autism, and what you can do as a parent to help.