So last night when I was holding my snake, I noticed this weird patch. at first I thought it was stuck shed, but then I realized it's different, plus her last shed was a few weeks ago and went really well(Mostly one piece and eye caps came off).

So anyway, here are a few pictures of one of the weird patches. There are a few others, pretty much all in the last 1/4 of her body and on the top, close to her spine.

What happened to her? Nothing's changed in the set up. Using a UTH on a thermostat with a heat lamp to keep up ambient temp. Stays around 86 warm, 78 cool. Humidity 50-60%

Any thoughts? The patch I'm worried about is in the direction her head is pointed, just above the yellow area.