1. Trichotillomania can lead to hair loss and can be difficult to stop without treatment.
拔毛障碍可能导致掉发，并且如果不经过治疗很难停止。

2. She has been struggling with trichotillomania since her teenage years.
自从她十几岁起，她就一直在与拔毛障碍作斗争。