HELP ME

My little one is 5 months and just when I thought his eczema was fading he got a massive flare up !! He flared up in hives and his chest became all raw (his chest is the most affected ) . I am in disbelief I tried emollients,tried paraffin, tried aveeno , lush dream cream, baking soda bath and I cut dairy out of my diet and still baby's eczema is getting worse instead of importing and baby can't help but scratching himself . I just cried so much looking a my little baby suffering like this please help me I need a solution asap to clear this up .