Frogger I am bummed that your rash symptoms are beginning. Have you thought of adding the amount of cilantro you intake? I 'm pushing my luck and gardening until 11:00 and do get sweaty and heated. I am so loving my freedom from Grover's symptoms. Yet so far no issues and of course still drinking a giant cilantro smoothie, but may skip one day a week. Next season plan to add many plants to my herb garden as others say it does well here in the Ozarks.
I have made a point to give my skin a break every other day staying out of the heat hoping that gives my skin time to heal any damage I have inflicted.Have you been out in the heat daily? I know Texas heat; when first married and my husband was in the Air Force we lived in San Antonio and Lubbock. My son and grand-kids live in Dallas area, Argyle and have to say that summer heat and humidity can drive me inside even when skin is in remission.
My fear is that cilantro is just a temporary fix and can only hold off a new outbreak temporarily.