Is there a mental disorder where you only speak in rhyme; you can ever talk normal at any place or time?

haha - that rhymed! This isn't from a medical professional's standpoint but perhaps you have OCD (if you're the person you're referring to).

speak to someone about this. i used a website called www.yourfriendshipcircle.com and they helped me alot. they give insight on anything you need help with

register here its free

http://www.yourfriendshipcircle.com/sign-up/

Idk