This article by Snack Safely details a recent finding in New Zealand on the connection if skin to FAs. Said to be the most significant finding on FAs in NZ in 20 years.
Worth a read.
https://snacksafely.com/2021/12/skin-plays-much-larger-role-in-development-of-allergies-than-previously-thought/ (https://snacksafely.com/2021/12/skin-plays-much-larger-role-in-development-of-allergies-than-previously-thought/)
Very interesting. I will say that elder DS had a couple of consistently stubborn patches of eczema. He had a few FA's which were mostly outgrown by age 2.
Younger DS had widespread eczema, chronically inflamed skin from the get go. As an adult he still has his FA's.