hello and welcome to HCM,
I have understood your concern about the white patch
in your nose.
Let me tell you that our nose even though a small structure from outside, since the advent of endoscopes, has become a large area of interest!
There may be many such colored or white skin like structures which may be a normal structure in most of the cases so do not worry.
However since you are concerned it is advisable to just undergo an endoscopy
in consultation with your ENT so that you can be rest assured that alls well.
take care and do not meddle with your nose
Dr Sriram Nathan