项某系任某的继女。任某的丈夫即项某的父亲项某某去世后,项某与任某因遗产继承纠纷而诉至法院。原告项某主张,任某出示的项某某的遗嘱无效,因为项某某患老年痴呆症已数年,不具有民事行为能力。鉴于项某某离世前是否患有老年痴呆症、是否具有民事行为能力为本案的关键所在,在项 A certain successor of a section of the girl. After Renmou’s husband, Xiangmou’s father, Xiangmou died, Xiangmou and Ren Ren sued the court for inheritance disputes. The plaintiff Xiangmou asserted that Ren Moumou’s will made his will was invalid because Xiang Moumou has been suffering from dementia for several years and has no capacity for civil conduct. In view of Xiangmou before death whether suffering from Alzheimer’s disease, whether or not civil capacity for the case is the key, in the