  Modifications of baryon properties due to the restoration of the chiral
symmetry in an external hot and dense baryon medium are investigated in an
effective chiral quark-meson theory. The nucleon arises as a soliton of the
Gell-Mann - L\'evi $\zs$-model, the parameters of which are chosen to be the
medium-modified meson values evaluated within the Nambu - Jona-Lasinio model.
The nucleon properties are obtained by means of variational projection
techniques. The nucleon form factors as well as the nucleon delta transition
form factors are evaluated for various densities and temperatures of the
medium. Similar to the chiral phase transition line the critical curve in the
$T-\zr$ plane for delocalization of the nucleon is non-monotonic and this
feature is reflected in all nucleon properties. At medium densities of about
$(2-3) \rnm$ the baryonic phase exists only at intermediate temperatures. For
finite temperature and densities the nucleon form factors get strongly reduced
at finite transfer momenta.
