Jasper, I know you have not yet read Dr Nase's book. On page 50 Dr Nase
writes how for some of us, facial flushing "is not always visible to the
naked eye" and "blood vessel dilation can occur long before the naked eye
can visibly detect it". He explains things well and once you've read the
whole section, you will understand about the broad range of symptoms and how
the combination varies between us all.

Kind regards,

Aurelia