ptilosis

例句：

1. 1. The patient had a ptilosis on his left ear that was causing him discomfort.
   患者左耳有毛球病，导致他感到不适。
2. 2. Pili tosis is a rare condition that affects the hair follicles and causes them to grow in an abnormal direction.
   毛球病是一种罕见的状况，影响毛囊并导致它们异常生长。
3. 3. The diagnosis of pili tosis requires a thorough examination of the affected area and may involve biopsy ifnecessary.
   毛球病的诊断需要对受影响区域进行彻底检查，必要时可能需要活检。