I'm new at this and have noidea- but I'm sure help is on the way- sounds like yu definiately have an illergic reaction-maybe wears gloves when you're doing it...
okay- Louisa, Paulgrow, and so many others- can't wait to hear this solution!
Try "fermenting" them in a dish of water for a day or two like you would do with tomato seeds. The outer covering should soften up enough to allow it to be removed to access the hips within. Many species of plants need to be "digested" in order to be able to be viable. Rose hips aren't one of them, but a bit of that treatment won't hurt them.