Can you Help my iggy's skin problem?

Awww. I wish I knew why this is happening, I did have an iguana that had a dark patch by her spikes on her back but she molted fine so I never addressed it and she is doing very well she is now huge and 7 years old. Maybe once she heals entirely it will be ok. Otherwise take her to the vet, I know the vets consider your lizard to be exotic so it will be expensive. I really hope your Iggy gets better.