Is it possible that the two things are related?
ETA: Thanks, everyone. I'd already treated mine with yoghurt, then canesten (btw I think natural, sharp yoghurt is better than Greek -- more bacteria!) when his came up. He's treating the area with canesten 3x daily -- should he be putting cream on his penis as well? He has had a tiny tear that won't heal on the underside of his glans for a long time, I wonder if that's not related to thin skin from a latent candida infection. He is uncircumcised. ANOTHER question: can I safely go down on him while we're waiting for the rash to subside completely? It's already looking much better.