<<Disclaimer: Verify this information before applying it to your situation.>> Dear List Members, My celiac 18 month old is showing a DH-type reaction on the backs of his arms and thighs (much milder rash than before he went gf). I assume he has consumed gluten and is reacting to that. My question as I am trying to track the gluten source: how long does it take to show a DH reaction? He seems to feel fine and his stools are so confusing I can't use them accurately to judge a gluten reaction. Many thanks for your help.