DS (6 months) has awful atopic eczema. It is only ever where his clothes touch him - i.e. it's not where his nappy is. Today, it flared up the worse ever. Very swollen on his stomach and back. All I can think is that he was sick on his cotton t-shirt so I took it off and he was wearing a fleecy tracksuit (65% polyester, 35%cotton) top directly on his skin. Could he be allergic to the polyester? Does anyone know if such an allergy exists?