  We analyze the induced self-energy and self-force on a scalar point-like
charged test particle placed at rest in the spacetime of a global monopole
admitting a general spherically symmetric inner structure to it. In order to
develop this analysis we calculate the three-dimensional Green function
associated with this physical system. We explicitly show that for points
outside the monopole's core the scalar self-energy presents two distinct
contributions. The first one is induced by the non-trivial topology of the
global monopole considered as a point-like defect and the second is a
correction induced by the non-vanishing inner structure attributed to it. For
points inside the monopole, the self-energy also present a similar structure,
where now the first contribution depends on the geometry of the spacetime
inside. As illustrations of the general procedure adopted, two specific models,
namely flower-pot and the ballpoint-pen, are considered for the region inside.
For these two different situations, we were able to obtain exact expressions
for the self-energies and self-forces in the regions outside and inside the
global monopole.
