EPQ help.

I am not quite sure if this is the place to do this but here goes. Hi, I am currently finishing up my HPQ but getting ready to start my EPQ, and I have some questions about what I want to do. So far I am thinking of doing something about an obscure mental disorder such as Alice in wonderland syndrome or capgras delusion but I am not quite sure how I would do that I am also thinking I may do something around homosexuality or accessibility but I am not quite sure yet. I really like biology / medicine and psychology. Does anyone have any help?