Last week the whole of the Bomper family went out to Greenwich park in the afternoon. DD2 (2.6 yrs) is a bit of a buggar for running off and we are always chasing and grabbing her, to stop her running into the path of cyclists, rollerskaters etc. When we got home under her armpit and in her elbow joint were red marks where dh had grabbed her, he didn't grab her particularly hard and I thought it odd, but kind of dismissed it. Today we went to a bootfair and she was doing her usual, she has got a trick of just going limp, and hanging off your hand when she wants you to let go, and was doing this with DH today. Whilst we were having dinner I noticed big red marks on her wrists!! The point of this convaluted story is - why on earth does she mark so easily? Is it something I should be worried about? Is it a sign of something nasty?