topiramate has strange effects, they aren't the same for everyone.
One effect that hits many people but isn't in the 'official' lists is a disassociation from emotions (apart from anger, you still get angry); this can be quite extreme initially, resulting in a lack on inhibition to respond to impulses. The best description I can give is it creates, temporarily a type of sociopathy. You feel no restraint from, for example, pushing people out of the way when walking along the street, even dangerously so. Consequences do not make sense.
If you know about this side-effect and are prepared for it, then it can be coped with. Mostly it goes away after a short period when the drug settles in. Oddly, an increased dose can decrease the effect.