Fungus1487's profile

We have an internal wall which is plastered. On the opposite side we are having the kitchen refitted. During some work in the kitchen involving channeling the wall a hand sized area on the plastered side has now come off. There is a slight bulge on one half and an indent on the other. All surrounding plaster looks solid. Depth of the bulge and indent is inly 1mm but its noticeable. Should I get a plasterer to sand this down and reskim that portion of wall then re paint? Or is there alternatives? Thanks.