We noticed a few weeks ago that my seven month old son has a small hairy patch on his back and thought nothing of it (laughed it off he's hairy like his dad etc) i've just gone to check on him now , he' sleeping in only a nappy because of the heat and noticed that the hairy patch is slightly raised and reddish in colour. Is it a birthmark (that has just appeared) or could it be something more sinister, it's not a strawberry mark as i've seen these and it is not as red, it's trianguler in shape about 2 cm across and feels hairy/furry to the touch. Has anyone's child had something similar?