There are many medications for treating bipolar disorder, so a psychiatrist, who is best qualified to identify which drugs work best for a specific patient, should oversee treatment. A psychiatrist is trained as a medical doctor (MD or DO).
Psychologists and some mental health counselors (Ph.Ds and PsyDs) can provide psychotherapy, or talk therapy, another critical part of treatment. Through therapy, people can develop coping methods that prevent long periods of illness, extended hospital stays, and suicide.
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