Some researchers suggest this mental state might share neurochemical characteristics with the manic phase of manic depression.
Julie was dealing with issues of manic depression and within a year, struggled to stop using speed.
British Dictionary definitions for manic depression
a mental health problem characterized by an alternation between extreme euphoria and deep depression
Though manic depression, manic-depressive are still often used by the general public, they are seen as having negative connotations. The preferred terms nowadays are bipolar disorder and experiencing bipolar disorder