tokens: Patients who experienced a manic or hypomanic switch were compared with those who did not on several variables including age , sex , diagnosis ( DSM - IV bipolar I vs . bipolar II ) , number of previous manic episodes , type of antidepressant therapy used ( electroconvulsive therapy vs . antidepressant drugs and , more particularly , selective serotonin reuptake inhibitors [ SSRIs ] ) , use and type of mood stabilizers ( lithium vs . anticonvulsants ) , and temperament of the patient , assessed during a normothymic period using the hyperthymia component of the Semi - structured Affective Temperament Interview .