Do a search for what is written at least for the 10 last years. However, if it is for your Ph.D. thesis you need to provide a thorough piece of history about how, when and what we know about the disorder; then about the history of treatment.
Article Severe Mood Dysregulation, Irritability, and the Diagnostic ...
Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) collaborative update of CANMAT guidelines for the management of patients with bipolar disorder: update 2013
Meta-analysis of genome-wide association data of bipolar disorder and major depressive disorder
https://www.nature.com/articles/mp2009107
Risk of metabolic syndrome and its components in people with schizophrenia and related psychotic disorders, bipolar disorder and major depressive disorder: a systematic review and meta-analysis
Article Risk of metabolic syndrome and its components in people with...