Would you believe there is a blog written by someone suffering from systemic nickel allergy? I was surprised, but shouldn't be given how common the allergy is.
http://www.ihatenickel.com/home/2012/6/ ... rgies.html
It seems nickel is a Type IV delayed type hypersensitivity. Claritin shouldn't help it in theory, but it ABSOLUTELY has cleared up most of my MC symptoms. I know because I've been off it for 48 hours and its killing me. Raging D is back. Doesn't help that I got drunk at my 20th reunion Friday night. 4 vodka drinks! but still had semi-normans the next day.

Being off Claritin has not really affected the rash. It does itch a little more, but not terribly so.
I go to the Chinese doc in the AM and the dermatologist in the PM tomorrow, and plan to ask him for a battery of tests:
ESR/Sed rate, maybe a CRP (although I've never had an elevated CRP)
Liver enzymes
Serum Tryptase (for mast cells/possibility of cutaneous mastocytosis )
CPK and adolase (muscle enzymes to rule out muscle involvement in DM)
Jo-1 and Mi-2 antibodies (always checked for in DM -- helps with prognosis and risk for interstitial lung disease)
Any kind of test for internal nickel allergy -- I don't need skin confirmation.
I plan to ask whether the skin biopsy of a couple of months ago still exists and can be stained for mast cells.
I also plan to ask if he knows how to get a cream made with Cromolyn Sodium
Anything else I should ask/ ask for?