It is difficult to know what to do when a loved one has intense mood swings and / or experiences hallucinations, delusions, or psychotic episodes. When these are particularly severe, the individual might have to meet (voluntarily or involuntarily) with a psychiatrist, and might be diagnosed with a mood disorder (such as bipolar disorder or cyclothymia), a personality disorder (such as borderline personality disorder), psychosis, schizophrenia, or other conditions. Some individuals may have some symptoms or traits that meet these conditions, but not enough to meet the diagnostic criteria.