I present an overview of recent theoretical results on fluctuations of
conserved charges in heavy-ion collisions obtained in relativistic
hydrodynamics and molecular dynamics frameworks. In particular, I discuss the
constraints on the location of the QCD critical point based on comparisons of
experimental data on proton number cumulants with precision calculations of
non-critical contributions. Recent developments on critical fluctuations in
molecular dynamics simulations are covered as well.Comment: 7 pages, 4 figures, contribution to the proceedings of Strangeness in
Quark Matter 202