Bob - thank you, thank you, thank you!!! After 20 years of Grover's every winter it's finally gone! As soon as I read you post about wine and scotch the light bulb went off - RED WINE! After years of trying colon cleanses, vitamins, probiotics and elimination diets I realized never cut out the wine - duh. I made the mistake of lumping all alcohol into one category - "I never had a problem with the tons of beer I drank in college". So for me, it is not the sulfites, I verified this by drinking white wine for weeks now. Lesson learned for the rest of you - WRITE DOWN EVERYTHING YOU EAT OR DRINK! I thought I could just muse it over in my head and get it all. I also wouldn't rule out locations you spend a lot of time in (maybe its mold in walls or something).
Thanks again Bob.
You might add a category for Sulfites, which may be a cause. I have had Grovers for 20 years or more. And drank wine and scotch for longer. Two years ago, I stopped drinking all alcohol beverages. I have been free from the itching and pain ever since then.