i have itchy, little bumps and welts that can I can watch appear. I have not been near any poison ivy, oak, or sumac. I have a bunch on my chest . Haven t changed soap, laundry cleaners or eaten anything new. Not bug bites as I get them even when I am at work in a hospital. Antihistamines are not helping so I am wondering if they are from stress . I work a lot, plus have 2 kids, a knee surgery coming up and a vacation in a month. Is there anything more that I can do to stop this?