英语语法分析

Pilonidal sinus is a common chronic disease of the sacrococcygeal region.

藏毛窦是一种骶尾部区常见的的慢性疾病。

Objective: To explore the diagnosis and treatment method of pilonidal disease.

目的：探讨骶尾部藏毛窦疾病的诊断与治疗方法。

If you have pilonidal dents in your skin but no symptoms, treatment is not required.

如果您有毛凹陷在你的皮肤，但没有症状，治疗是不是必需的。