Skin changes are very common. The skin is a living organ that often changes in response to the environment and its stress. That being said, moles are concerning. If there is any remaining skin alteration, I would strongly recommend seeing a doctor
. Specifically, a dermatologist
or skin specialist could be of benefit.
Firstly, it must be said that there is a known risk of skin cancer associated with tanning. The ultraviolet light can cause changes in the skin which increases risk for melanoma and squamous cell cancer -- two serious forms of skin cancer. I would strongly recommend that you discuss this with a doctor. Especially if you are being burned, this is excessive and unsafe.
New moles are concerning. Melanoma is a serious form of skin cancer that requires concern. The signs that a mole might be melanoma include if its growing, asymmetric (not a perfect circle), has an irregular border, has multiple colors, and has a diameter >6 millimeters or being elevated. Actinic keratosis or squamous cell cancer can also form after a burn. This is another type of skin cancer that requires attention.
I would recommend you see a doctor. Even if the lesions you noticed are not a concern, you are at risk for problems in the future. Good luck!