I'm following a video tutorial on sculpting and when I switch back to object mode to review my work there are weird random spikes jutting out from my mesh, as best as I can determine they arise from attempting to work around the neck area.
Attempting the smooth or polish tool around the neckline causes this:
Here's edit mode.
Here's sculpt mode:
In sculpt mode the original deformations didn't appear, I only noticed when I went to object mode. Back in sculpt mode the neckline deformations occured and all attempts to smooth it out haven't fixed it.