presenile dementia

例句：

1. 1.She was diagnosed with presenile dementia at the age of 60.
   她在60岁时被诊断出患有早发性痴呆症。
2. 2. The condition is characterized by memory loss and difficulty in daily activities.
   这种病症以记忆丧失和日常生活困难为特征。
3. 3.Early detection and treatment are crucial for managing this condition.
   早期检测和治疗对于管理这种疾病至关重要。