I developed a heinous case of jock itch a year back, while living at the beach. In the end, vinegar & nudism cured it. Previous to that, I tried wearing looser clothing, talcum powder, and gold bond medicated powder. After about a month, I got the idea of trying the vinegar. By that point, my skin was cracking and peeling. It was ugly.
But not nearly as ugly as after I applied the vinegar. Or as painful. Pretty much every part of my skin that was starting to host the itch fungus was liquified. Not wanting to sabotage such an unpleasant treatment, I went ahead and went full nudist for the period to stay maximally dry. I also made certain to apply the vinegar all around the affeted area, not just where I could feel or see the itchy skin. I went with 2 or 3 treatments a day to keep the fungus from restarting. After about a week of this, the itch was pretty much all gone. The next week my skin started healing.
It was an extreme treatment, but in the end, it worked. Just earlier this week I accidentally used the same shower towel as a houseguest, and soon after… itching again. This time I went straight for the vinegar before it got any worse, before the skin started to crack or peel. It didn’t hurt nearly so badly this time. As for results, that has yet to be seen.