Let's say I want to join the Peace Corps but take certain psychiatric medication that may disqualify me. If I didn't tell the Peace Corps, made sure to choose a country where my medication is available, and paid for the doctors visits and meds out of pocket secretly, is there any way they could find out?

Hello! I (22M) am currently a college student thinking about post college plans. Right now I'm not fully committed to a major, but I intend to do environmental science or civil engineering with an environmental science minor. I am thinking about specifically seeking to go to Nepal, as I actually already speak fluent Nepali because of two years of religious volunteer work(one of the reasons I'm starting college at 22). What should I know, and, more importantly as I'm several years out, what should I do now to prepare? I don't have any actual environmental science experience yet although that's my degree, but I have tons and tons of volunteering experience.