Imagine an STI occurring in some early European royal family.

And imagine that because royalty are obligated to marry other royalty, the STI spread throughout the other royal families but didn't spread to the lower classes.

I wonder if in this world this STI would become high status, and therefore be considered attractive.

Bound feet look physically repulsive, but because they were associated with both femininity/daintiness and the upper class, they were eroticized.

I wonder if this STI would be given some fancy name and be sought after rather than avoided.

"Ah yes I have the swollen red flower of the king."