How to treat people who suffered bipolar disorder?

Excellent prognosis. Accurate diagnosis is the fundamental first step. A specialist in the treatment of depression and bipolar illness would be best to make the diagnosis. That would be a psychiatrist.. Depending on the phase of illness - depression, irritability or mania -medications are selected accordingly . Psychotherapy (counseling) is important.
Complex Treatment. Treating bipolar disorder is dependent on age, severity of the disorder, and responses to current medications available. In general we use medications called "mood stabilizers" that keep the person's on a more even keel. Depression is the most common presentation and ongoing difficulty. Medication for the depression has mixed results. Therefore follow up is vital for bpd.