What Causes A Red,flat,smooth And Inflamed Area On Thigh?

Four or five years ago, I stayed at an eastern Boston, MA hotel. Shortly after returning to my upstate NY home, I woke in the middle of the night because of outer rear right thigh pain that felt similar to being forcefully pinched by someone with long fingernails or being impaled by a needle. However, I was so tired, that I simply sat up, fluffed the pillow, and fell back asleep. It may be of note that I was sleeping on my back.

The next morning there was a 6 inch wide inflammation that protruded 2 inches from my thigh where I had experienced pain the night prior. For the exception of a red portion in the center, it looked like a 6 inch wide, 2 inch deep mosquito bite i.e. the 6 inches of smooth inflammation was flesh or just lighter than flesh toned. The defined, round, red portion at the center of the inflammation was raised an additional millimeter or two from the rest of the inflammation and had miniscule bumps; and these miniscule bumps lined up so that it looked like a tiny daisy or flower head. The entire inflammation was the itchiest thing I’ve ever experienced. It didn’t hurt unless something touched it, but when something touched it, even lightly, it was more excruciating than any surgery I’ve had. This pain was literally pain, not burning or stinging. To the touch, the inflammation was slightly warmer than surrounding areas; I expected it to be warmer than it was. There wasn’t a blister, pustule, ulcer, puncture, stinger, or any visible opening from inside the inflammation to the outside of the inflammation. There were no vascular “trails” or “tracks.” I did not have a fever. No other part of the body seems to have been effected by this inflammation.

During the following two days the 6 inch wide, 2 inch deep flesh toned inflammation reduced into a defined 6 inch wide, red, flat, smooth, round, sensitivity that wasn’t as dark as the aforementioned eraser-to-dime sized center portion. The center was still raised a millimeter or two from the rest of the inflammation, but the miniscule bumps started to subside. Familiar with how to observe Lyme and MRSA, I traced the parameter of the entire inflammation with a marker. And with that I ruled out MRSA and Lyme.

The lighter red portion reduced in size over the next week to week and a half. Some days it would get slightly larger than the day prior, but ultimately the entire inflammation shrunk to the size of the darker red center portion. And with that I ruled out MRSA and Lyme.

Over the next two to three weeks the dark red center portion turned waxey, or like it was covered in psoriatic skin plaque, and then faded into what looked like a dime sized flat, smooth, hyperpigmented birthmark.

The issues are: A.) it’s still here all these years later, B.) It’s now larger than a silver dollar, C.) gets larger every time I take a sulfa antibiotic, C.) the remaining “birthmark” portion first raises a millimeter or two from the surrounding skin, gets itchy, then waxey like a rogue patch of psoriases when I take sulfa antibiotics, D.) my physician isn’t taking me seriously about this.

What do you think?