[Onni is simply quiet while the person he's talking to thinks. He can hear it, the way the other person's mind is working, a low humming buzz that starts to make his ear tickle after a few moments.

Then he sees that lesion, just a flicker, and Onni's brow furrows as he focuses on what he could make out of it.]

That doesn't look like the Rash to me. But we can't rule it out either.

[A pause, as he considers what else he might need to explain.]

It's pretty simple. You get a rash, red and sore and itchy. Then you start vomiting, have a fever, and other signs of being sick. You're bedridden for several weeks, and then your body starts to mutate into a Troll. The disease eats your skin away in some places, in others it creates pustules and tumors, and you stop resembling a human, lose your sense of will. We've never been able to bring back someone who's progressed that far.

[A hum, deep in his throat. There's the sensation of him crossing his arms against his chest.]

But like I said, that doesn't look like the Rash, really.