I have previously undergone tiplasty by redefining it with septal cartilage 4 years ago and recently I noticed there was a purply/bluish spot on the tip of my nose but when I press on it gently the spot goes away. This has happened 3 times now over a period of 2 weeks and it came at sporadic times and with no apparent reasons. I want to know is this spot occuring because of an infection underneath my skin and how serious is it? And is it normal for an infection to occur even after years of recovery? I am of asian decent and have thick skin on my nose if that helps. Thank you very much for your expertise!