 [ Symptoms ] my aunt steals pain killers and she is bipolar does bipolar cause her to steal  she is in her mid to late fourties she claims she dosent steal pain killers but we have all seen her do it now her sister claims that she steals the pain killers due to her being bipolar i am wondering if this is in fact true or that her sister is just denying it to herself which in turn is not able to get her the help she needs [ Disease ] in the manic phase the person can tend to act impulsivelypartake in unpremeditated risky behavior that they normally would not so therefore its possible that cheating and stealing are something that occur when she is in the manic swing of it but it is no excuse to liecheatsteal there are some people who are bipolar but would never cheat or steal but they would drive their car recklessly etc call her doctor and express the things that are going on i am sure heshe would be a good help bipolar disorder is about moods lying cheating stealing is about their character she has probably done it for so long that her bi polar disorder is a good excuse to get her out of tough situations like this one