recurrent disturbance

例句：

1. 1. The symptoms of the disease are recurrent and can be easily confused with other conditions.
   这种病的症状是复发性的，很容易被其他疾病混淆。
2. 2. The patient's condition is recurrent, requiring regular follow-ups.
   患者的病情是复发性的，需要定期随访。
3. 3. The research team found that certain environmental factors could lead to recurrent outbreaks of the disease.
   研究团队发现某些环境因素可能导致该疾病的复发。