Just had a solar keratoses frozen off my hand.
It took my sis in law from Oz to confirm that it was a s.k. (She's a "flying doctor" with the RFDS). I had seen 2 GPs in the UK who said it "was nothing".
I saw a doc the other day who noted my accent, asked how long I had been in Oz and then said that it's a s.k. and offered to freeze it off then and there. Very pleased with that doc.
I wear a broad spectrum block out every day on my face and hands.