有可能是鼻腔里的毛细血管破裂,如果是这个原因的话,涂些药膏就能好        

是最近一段时间的呢，还是一直这样？

male or female?

seems many guys have this problem,
but I have never seen any gal has it.

My LG and my daughter are like that.  The doctor said it is their vein is too thin, can't fix it, but no big deals.  If not alwways like that, according to Chinese doctor, you are too hot, need to take medicine.  Don't know who to follow.