If it is the latex in the condoms causing the irritation you might be able to
use a plastic condom instead. Potter and Villemeur have a review of the
research on sythetic condoms. Contraception volume 68 (2003) 39-45.The breakage
and slipage rates vary depending on the brand and studies but typically latex
condoms have a breakage rate .4-2% vs. 1-6% for the synthetics. The slippage
rates for latex .6-1.3% vs. .7-4.5% vs the synthetics.
I am not sure where you live but there are a few polyurethane brands available
and a SEBS brand. Also, Trojan now has a polurethane condom with nonoxynol- 9.

Good luck,
Eddie