Hi. I am a 54yo female who will be doing PDT on my face this Thursday for AK. One spot I had biopsed 3 months ago on my cheek was a pre-squamous cell; and I have multiple spots of scaly AK on my face. Dermatologist recommended PDT, which I will undergo this Thursday. My one complaint is that I don't know exactly what to expect. I learned more on here than with my doc office shared. I was...