OCT is a recognized diagnostic modality in dermatology and worth discussing with your doctors. Here are some references:

https://www.mdedge.com/dermatology/article/146053/melanoma/o...

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5946785/

http://www.octnews.org/category/5/dermatology/

and here is a clinic that talks about using it to assess skin: https://dermnetnz.org/topics/optical-coherence-tomography/