I only posted once about a year ago, but this sounds like something I went through with my 7 year old child. Dx'd with Pandas/Pans at age 5 and lyme, babesios just last Feb with DR. B.
She finally told me that she feels awful for acting so bad, but she doesn't know how to act when she is sooo tired from being in school all day. Allowing her to rest even if it means taking a few days of school off, or trying to make sure she doesn't have much stimulation after school (no music in car, sunshades, her own special blanket in car she can wrap herself up in to tune everything out for a while, no errands right after school, and a good protein snack as soon as school is out)
I think her trying to be on best behavior at school even though all the stimulation at school would make her "get a migraine" was all she could take.
It also seemed to of course happen around the same time of a sinus infection (she used to get those often) even on twice a day PCN.
