The cartilage at the tip of my nose is split in the middle and separates since I was born.

Is the "split" in the middle of the cartilages because we see the two cartilages separately, with a space between the cartilages, like in the woman pictured just above?

I usually make computer morphs when I'm answering questions like this, to show the changes that are possible with a rhinoplasty. For example see this page:FacialSurgery.com/RealSelf/RealSelf_Morphs.html... but of course you didn't post photos. If you go to the "Web reference" link just below my post, at the *very* bottom of that page is a link to instructions on taking and sending photos that are most useful for an online consultation like this, in case you'd like a more complete evaluation.

Thank you for your question! It sounds like what you are describing is a nasal tip cleft from poorly defined lower lateral cartilages.  We'd have to see them and get a better look at what you are describing to give you a better assessment.  In regards to the position of the cartilages and them being split - the tip defining cartilages are similar to the M on the McDonald's logo.  The problem comes in when there are discrepancies in the width, the strength and rigidity, the length, etc.  In order to address these issues you permanently you would need to be evaluated for a rhinoplasty or tip rhinoplasty.  Sometimes these can be addressed non-surgically with fillers.  That being said, non-surgical solutions are also non-permanent.  I hope some of this helps! Best of luck.