疼痛,是人体患病后最重要的“呼救信号”。老年人由于生理原因,对痛感的反应能力下降,患病时常缺乏应有的疼痛症状,往往被忽视,待到各种典型症状明显发生时,多数患者已失去了宝贵的治疗时机。因此,老年人出现某些无痛性疾病信号时,应引起警觉,及早就医。无痛性痰中带血及咳嗽、 Pain is the most important “cry for help” after the human illness. Elderly people due to physiological reasons, decreased ability to respond to pain, sick often lack the symptoms of pain, often overlooked until the typical symptoms of any significant occurrence, the majority of patients have lost their precious timing of treatment. Therefore, certain signs of painless disease in the elderly should be alerted and early medical treatment. Painless sputum bloody and cough,