DS (4 years) has since yesterday developed a sporadic red, angry looking rash with whitish lumps, mainly on his cheeks and mainly after he has been sat down watching TV. The rash falls where he has had his hands pressing on his cheeks. It goes after a while. It doesn't seem to bother him. He also developed the same rash this evening on his tummy which also went. He has a cold and has a small red excema like rash on his chin which doesn't disappear. Not sure if the two are related. This hasn't happened before. I can't think of anything which has changed, eg food, washing powder etc. Allergies run in my family so think it might be something like this. Any ideas??