Would rosacea (inflammation) inhibit a beard transplant from "taking hold"?

Having a skin condition such as rosacea should not affect the result of your hair transplant surgery.   If you are concerned, ask your doctor.

Rosacea
is not a dermatological condition that would impede growth of your grafts.  However, my recommendation would be to have
it evaluated and possibly treated with lasers such as V beam laser then wait a
few months before having a beard transplant.

having rosacea should not make a difference if you have a hair transplant, but a test graft can be done to find out for sure