Can worms cause aggressive behaviour in horses?

[Horse Lady]

I've searched the web and been unable to find anything on worms causing horses to display aggressive behaviour. I have a yearling a home that has been on a strict worming program since I got her after weaning. Every so often we will find one sloppy poo in the field with worms in it, the rest have nothing. It seems to co inside with her becoming quite nasty and aggressive. I've just ordered her a 5 day wormer to see if I can get on top of the worm issue once and for all. I'm eager to find out if the aggressive, nasty behaviour can be caused by worms or if I need to look at what else it may be.

Thanks in advance for your comments xx