keratosis
"Yesterday was Day 14 of my Zyclara treatment. Using it on my forehead where there was a previous basal cell, and on my chest where I currently have a basal cell. I decided to do the whole top of my chest. Wow, I have many actinic keratosis. It's really scary. No real bad side effects other than the swelling and rawness on my chest. Forehead, found 1 AK, appears to be working. I have been experiencing some lower back pain, as I did when I used the Carac Cream. Wondering if this is a side effect or not? I hope this works! Will be doing Carac again in the winter on my cheeks. 
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