DD is nearly 6mo and we started weaning her maybe about 1month ago, until then she was ebf apart from a few top up feeds when she was born. She developed excema about the same time as we started weaning but gp doesn't think the 2 are related? 
I started doing a few kit days at work so she had a bottle on Tuesday then again this weekend, these were the ready to drink sma gold bottles. Then last night I bought a can of powdered milk and gave her 8oz of this. She took 4oz, screamed then threw up what I can only imagine was the whole 4oz. (thankfully all over dp's shoulder, back and legs) then almost immediately I noticed blister like white spots on her legs and they were really red around the spots. Then she developed a horrible red rash all over her chest, neck, back and arms.
She still has a rash this morning but seems absolutely fine (apart from what sounds like a dry cough?) does this sound like a milk allergy? If so why only when having powdered milk?