Board Thread:General Discussion/@comment-68.5.126.226-20140503204151/@comment-25407503-20140504003242

short term affects are migraine and headache. long term is memory loss and difficulty concentrating  or remembering.

having your mind read will not result in any damage as you wont even  be aware of it

mental attacks are hard to learn to use. and unless your haunted by a spirit that uses them constantly your probably not in any danger if your friend is telepatheic