Just went to dr for this today. I has be happening for me for several years. I sweat under breasts and in that crack, it just is who I am. He told me NO creams, they tend to sink into ulcer and cause more swelling. If you had to use a cream he recommended Silvidine. He said, keep it dry, if that means sticking a piece of gauze in there each time you go.... We also talked about powder but would caution you all to talk to your dermatologist before using, I was using talc under by breasts and the dermatologist said that can cause other problems and asked me to use. Zeabsorb. I've been using that under my breasts for two years and noticed a big difference. I use it all year round with no painful heat rashes. I am going to try that on my ulcer along with a gauze pad stuffed back there to see how that goes.
Doctor today also said since I sit at a desk all day I might want to consider a standing desk to ease some of the pressure on the ulcer, it's kind of like a pressure sore.
Lastly, thank you all so much for sharing, to find I am not the only one easy so much.
I also have this problem, except my problem happened after I had a boil in the area, once the boil drained and everything it seemed fine but then I also found a crack around about the area where the boil use to be. That crack is now soar and itchy. I decided to get what is called a coccyx cushion, it really helps for what you sit down as it does not put pressure on the irritated area (I suggest memory foam coccyx cushion as it fits best to your bottom shape) also I make sure to clean the area everyday and keep it as dry as possible. I guess it is something we have to put up with, at first I was scared it might be Pilonidal Sinus but since that is fairly rare so I am doubting it and then the nurse I soar did not seem to think it was that... she claims it was scar tissue from the boil. But nonetheless doing what I said can help with the problem. And yes, hot weather really don't help as it causes sweat to irritate the area so keep dry as much as possible.
Use deodorant to fix it and prevent it. Sitting and sweating causes it. . Keep it dry plus never touch it oand definitely don't scratch it.
I Have The Same Thing..I Dont Know How It Happens But Im Guessing Its Because Of Dry Skin So It Tears/Rips Easily, The Only Thing That Makes The Pain Or Discomfort Go Away For Me Is Vaseline.
I think the problem is your not rinsing off all of the soap in this area in the shower. I find this on me in areas where the skin folds,under the breasts and under the folds of the stomach if your obese.
Run your hand several times over these areas when rinsing off to ensure the soap completely comes off in these areas or take a bath instead.
Use corn starch and not talcum powder in this area helps completely dry the area also which is part of the problem also.
Females don't use talcum powered it causes Ovarian cancer it might cause problems for males too.
It sounds like herpes out break so thy need to test the cut for that