Today out of nowhere, my inner thigh became extremely itchy. I scratched it (from outside my pant leg), and it wouldn t stop itching for about 5 minutes, I continued to scratch several times, not even rough scratching... and then it stopped for the rest of the day, I just noticed a bruise in the exact area that is the size of my palm. brown, red and purple colored. I have never bruised from bites, or scratching before...also there is no bite marks or bumps, or pain when I touch it. so far ive googled this and haven t found much info. any ideas?