bipolar affective disorder

例句：

1. 1. She has been diagnosed with bipolar affective disorder and is currently undergoing treatment.
   她被诊断出患有双相情感障碍，目前正在接受治疗。
2. 2.The patient's condition worsened during the manic phase of her bipolar affective disorder.
   该患者的病情在双相情感障碍的躁狂阶段恶化了。
3. 3.Manic episodes are common in bipolar affective disorder, but they can also lead to severe depression.
   在双相情感障碍中，躁狂发作很常见，但它们也可能引发严重的抑郁。