What makes something a pain effect?

[den paul]

I found the description of a fear effect in this faq：
http://paizo.com/paizo/faq/v5748nruor1fm#v5748eaic9svt

while，I cannot find the similar description about a PAIN effect
so，What makes something a pain effect?
（It is obviously that the spell with pain description should be a pain effect， but how about the others？）

[James Risner]

Ask your GM.

Other than that, something with [pain] in the descriptors.