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1·He suffers from hereditary angioedema.

他患有遗传性血管性水肿。

2·Ten are for rare or “orphan” diseases, which frequently lack any therapy because of the small number of patients with the condition, such as a treatment for hereditary angioedema;

十种药是为罕见或“孤儿”病，因为患者少的情况经常缺乏任何治疗，例如遗传性血管水肿治疗。