Click here to read what symptoms I'm refering too. Small scale delusions, delusions of grandure, grandiose ideas, feeling worthless, racing thoughts, easily distracted, random talkative episodes, self blame. Things like this, read up on the site I've given and see what things you recognise in yourself, I want to know if weed will or can cause this. I'm an avid smoker, though lately I've been doing it less and will stop for 3 months with the help of friends... not sure if I can make that. In any case, post your own experiences, if any, to bipolar related symptoms, which may or may not have been caused by smoking cannabis!