Systemic
Diseases
Whereas
systemic
diseases
are
those
which
have
involved
deeper
organs
and
systems.
A
staphylococcal
skin
boil
begins
as
a
localised
skin
lesion
but
may
become
serious
when
the
organisms
spread,
causing
systemic
diseases
of
bones,
meninges
or
heart
muscle.
