Social Constructivism about the disease concept has generally been
taken to ignore the fundamental biological reality underlying diseases, as well as to
fall foul of several apparently compelling objections. In this paper I explain how
the metaphysical relation of grounding can be used to tie a socially-constructed
account of diseases and their classification to their underlying biological and
behavioural states. I then generalise the position by disambiguating several
varieties of normativism, including a particularly strong version of social
constructivism, and showing that the grounding approach is available to each. I go
on to provide what I believe to be the first attempt at a full semantics for diseasetalk
and disagreement, before showing on that basis that the most troublesome
objections to these positions can be avoided.