I do not need more than to brush by a person wearing wool or step into a barn that may house sheep in order to have a reaction. I break out in hives, my eyes water, I begin sneezing. etc. I once was given a scarf that had a small amount of wool blend in it that I was unaware of. It didn't itch but within minutes of wrapping it around my neck, my breathing became labored and I thought I was going to pass out. Taking this into consideration, do you think I can wear the cashmere sweater I was just given for Christmas? Or, should I just return it and not even try?