Thank you for your reply! It is very helpful!
At first, I assumed since I carry most of the extra fat on my body,as most women do, on my butt and thighs, that it was just me burning off the fat(haha literally) or working that area more than usual. But that just can't be what it is haha.
My training for the 5K is walking for 90 seconds, jogging for 60 seconds for 20 minutes. I don't have a problem at all when I walk, but after about 20 seconds of the 60 intervals, I'm itching and burning like crazy! Then when I walk again it goes away, only to return when I start the next jogging interval. It is quite frustrating!
I run again tomorrow so I'll see if it's the same, better, or worse. Hopefully, it might get better over time as I run more often. If it gets worse I won't be able to take it and will have to stop. I'll see a dermatologist for sure though- thank you! I wasn't quite sure which type of doctor would be best to consult. Most general practitioners have no clue when I mention it to them.
I started a group of people doing this 5K training program, and I just can't drop out haha. I would feel so bad! So we'll see how it goes- I'll keep everyone posted and hopefully, it gets better

Thank you! So glad I'm not crazy like the doctors think haha.