people have around 300 contacts on average---that's way more than me but for typical people that means you actually know 3 people with sz....its actually the same percentage of the population that has red hair so if you've ever known someone with natural red hair then you probably also know someone else with sz---I think its semantics whether it's rare or not but in most cases rare diseases are things where there are say hundreds or less of individuals who have them, it's hard for them to get medicines etc. In contrast APs are one of the top selling meds---thus in my mind its common.