Men with bipolar disorder experience intense periods of mania and depression that significantly differ from their normal personality, according to the National Institute of Mental Health. There are few known differences in the signs of bipolar disorder between men and women; however, men are less likely to experience rapid cycling between episodes of mania and depression.
Men experiencing a period of mania may feel happy or be more outgoing than usual, notes the National Institute of Mental Health. They may engage in risky behavior, talk quickly, have difficulty focusing on a single task or idea, need less sleep than normal, and start multiple new projects. Some men also are extremely irritable during a manic episode.
When men experience a depressive episode, symptoms include feelings of sadness and hopelessness, suicidal thoughts or actions, changes in sleeping and eating habits, and a loss of interest in hobbies or other interests, explains the National Institute of Mental Health. Men may also feel irritated when depressed, have trouble concentrating and have difficulty making decisions.
During manic and depressive episodes, men may also experience psychosis, such as hallucinations or delusions, states the National Institute of Mental Health. Men in a manic state may think they are famous or rich. Men in a depressive state may believe they have no money or committed a crime. These symptoms sometimes cause people to misdiagnose bipolar men as schizophrenic.