DS has been complaining of a "stitch" in his lower left abdomen int he evenings on and off for last 2 weeks, his poo is dense - sinks in the loo and breaks up. He also has a sore anal area and spots on his buttocks and face. I am wondering if this is a dietary matter. He is mildly egg intolerant, can eat egg in cake etc but if eats homemade ice cream or custrad for example gets eczema. When he was a baby when I was transfering him from bf to bottle he was intolerant of a number of formula. Anyone got any ideas