From time to time I break out in blisterlike bumps on my fingers (mainly on the joints) and elbows. They are raised, red, hard, and they hurt. Does this sound like DH? or is it something else?

Could be, those are common places for DH out break! You should get tested.

Good Luck!!

Snowball

Yes it sounds just like mine I use to get while eating gluten
Check and make sure ur not getting Glutened in any way shape or form (like hair products, lotions soaps, tolietries and so on) read labels too some products tend to change and alot that say they don't use gluten have hidden gluten
Good Luck!
Bea