Course of illness is central to our focus on bipolar disorder due to the li
felong nature of this illness in the majority of patients, in this overview
we highlight areas of consensus and debate on factors that impact course o
f illness. Findings on age at onset, psychiatric comorbidity, frequency of
episodes, cycle pattern, rapid cycling, mixed symptoms, and precipitants of
episodes including use of substances and antidepressants and lithium disco
ntinuation are discussed. The diversity End range of presentation and even
course of illness become quickly apparent in this review. Highlighting thes
e factors rather than seeking a unifying theory should be a productive way
to refine our ability to identify additive factors contributing to course o
f illness for patients with bipolar disorder.