The actual
lesion just looks like red, irritated
skin, and the normal/unaffected
skin surrounding it is a bit red/inflamed. It is not painful, there's no burn, etc.
I have had this for 8 days now. It first appeared after having oral sex -- there was a tear in the skin, and this tear is what is infected. The day after the skin was slightly swollen and a bit painful, both of these went away after about 2 days. But the site of the tear with this "lesion" is still there.