If your toddler was hit on the forehead by another, would you expect a lump and bruise?
Nursery called today to say that another child had hit DD (she's 16 months, other child same age or younger). No mention of any objects used. Apparently DD cried but recovered pretty quickly. When we got home it became apparent that she has a raised bruise around the size of 50p on her forehead 
It just seems weird to me. I don't think for a minute think that they're lying, but she's only ever had lumps like that from falling face first on something hard. Then again she's never been hit before (thankfully) so nothing to compare against.
Any thoughts? Thanks.