substance abuse is very common among people with bipolar disorder but the reasons for this link are unclear. some people with bipolar disorder may try to treat their symptoms with alcohol or drugs. however substance abuse may trigger or prolong bipolar symptoms and the behavioral control problems associated with mania can result in a person drinking too much. anxiety disorders such as post-traumatic stress disorder and social phobia also co-occur often among people with bipolar disorder. bipolar disorder also co-occurs with attention deficit hyperactivity disorder which has some symptoms that overlap with bipolar disorder such as restlessness and being easily distracted. people with bipolar disorder are also at higher risk for thyroid disease migraine headaches heart disease diabetes obesity and other physical illnesses. these illnesses may cause symptoms of mania or depression. they may also result from treatment for bipolar disorder.
what illnesses often co-exist with bipolar disorder?