Bipolar mania

Hi! Something terrible happened to me. I have younger sister. Month ago my sister has been diagnosed Bipolar mania. It’s hard to say but I feel shame to ask anyone about this. Her doctor prescribes some drug, and she is better now. Do anyone know something of this disorder.

Bipolar mania is mental disorder characterized by periods of mania and depression. Symptoms of the manic phase are excess emotional displays, excitement, overactivity, excess joy, a high degree of energy, inability to concentrate, often coupled with unrealistic ideas about one's worth. In the depressive phase, apathy and underactivity are seen along with feelings of excess sadness, loneliness, guilt, and lowered sense of one's worth. Most people with this disorder respond well to the drug lithium. You must understand that Bipolar mania is mental disorder, and you must be there for your sister. You can’t feel the shame about this. She is your sister, and you must accept her disease.