My 5 year old gets totally fixated on things that aren't perfect to the point he has a physical reaction. For example, we cut his hair into a faux hawk because he wanted one, but he can't wear it that way because he can't stop obsessing over if it is perfectly straight/standing up. Another example, he was hiding in the closet to scare my husband and I went over and opened it, which exposed him so my husband wasn't startled at all. He was soooo upset he was actually hyper-ventilating. He wanted to start over so it could happen right but my husband said no because he doesn't get what he wants by throwing a fit. It was literally half an hour later when my son had stopped crying and had moved on (so I thought) when he asked me if tomorrow we can do it again right. He also said that his heart was still thumping, but he was glad the rest of his body finally felt better. Woah. Last example: he asked my husband to write his name on the tag of his stuffed animal. Apparently my husband wrote it upside down and my son was so upset about it he finally asked my husband to just cut the tag off. This was last night. This morning after he woke up he asked me if we could buy another one and I could write his name on the tag the right way. How could he still be obsessing over it 12 hours later, even after sleeping? He's also always the last kid finished with projects, etc. because he is trying so hard to make everything perfect.
Is this normal behavior?