Berrios G E, Brook P
Acta Psychiatr Scand. 1985 Sep;72(3):296-301. doi: 10.1111/j.1600-0447.1985.tb02610.x.
Thirty-seven, out of a sample of 100 elderly subjects, all suffering from dementia, were found to have delusions. The delusions were more common in women, in patients with a history of psychiatric illness, and amongst those with higher information subscores (Blessed Scale); and were less common in patients suffering from apraxia or severe psychosocial incompetence. Amongst the deluded patients the simultaneous presence of disorientation, hallucinations and hyperactivity often signified the diagnosis of delirium, but on follow up it was not correlated with death within 18 months. The same symptoms in the non-deluded patients were correlated with severe social incompetence and death within 18 months. It is concluded that the presence of delusions in subjects over 75 years old suffering from dementia is related, to certain extent, to previous or concomitant psychiatric illness, and that it reflects a relative preservation of mental function amongst those without such history.
在100名均患有痴呆症的老年受试者样本中，有37人被发现存在妄想。妄想在女性、有精神疾病史的患者以及信息子评分较高（布列斯德量表）的人群中更为常见；而在患有失用症或严重社会心理功能不全的患者中则较少见。在有妄想的患者中，同时出现定向障碍、幻觉和多动往往意味着谵妄的诊断，但随访发现这与18个月内的死亡并无关联。非妄想患者出现同样的症状则与严重社会功能不全及18个月内的死亡相关。研究得出结论，75岁以上患有痴呆症的受试者中妄想的存在在一定程度上与既往或同时存在的精神疾病有关，并且这反映了那些无此类病史者相对保留的心理功能。
