This was in my inbox this morning.
Would take further reading to find out if test subjects were screened for DH or Celiac.
Apparently, I can't link to the article without going into my personal account.... so, here's the info. Go to Medscape http://www.medscape.com and get a free account, and you can read it.
Dapsone Resurrected for Chronic Urticaria
Mar 06, 2013