ReneeC:I'll second DocVikingo's comments. It would appear to me that this might be a case of (latex?) reaction to the glue in the seams. You could try covering the seams with ducktape but over time I think you will have other sticky issues. Might have to wear that rashguard.
I can wear latex gloves, a drytop with latex seals and undergarments w/ normal elastic without incident. I doubt this is a latex allergy.
Ampex