About 4-5 days ago, I noticed a swollen spot on my hip/butt area. It is red now and has gone from a small spot to a bigger spot. It hurts to touch or rub. I thought it might be an oil spot like what we get behind the ears at times but it has gotten bigger. Because it got bigger, I then thought maybe it was a spider bite or something. I just can't figure out what it is. A friend suggested that I soak in epsom salt so I tried that and it took down some of the redness and on the package, it suggests that you could soak a clothe in epsom salt/water and put it on the enflamed area and it would take it away. But it hasn't taken it away.
I had the same problem and it turned out I had a skin infection and needed antibiotics. At first it was very small and it eventually got to the size of a softball and I ended up getting a fever because of it. If it gets bigger and you develop a fever I recommend seeing your doctor.