A Dermatologist Froze an Age Spot Yesterday. Is This Normal? (photo)

Freezing skin lesion results in an injury to the tissues and the healing process will take 4 - 6 weeks. Large lesions like this on the face may also be a lentigo maligna, which may be a precursor of melanoma. A biopsy is always a good idea for these type of lesions.

This is not at all unusual. I prefer lightening creams or laser treatments but liquid nitrogen can be highly effective. The darkening that you've seen overnight should improve with time and the pigment that was treated should also lighten with time. I hope this information is helpful.Stephen Weber MD, FACS

This question is a few years old now but it remains relevant as these types of lesions much be checked by a dermatologist before they are treated. Spreading lesions with darker areas can be suggestive of sun spots or more sinister things that must be excluded first.
That said, cryotherapy is a reasonable treatment and this is what it looks like the next day. However eight years on we are using more sophisticated techniques such as the hyfrecator device which offers quicker results, more controlled destruction of the lesion and faster healing.  

Thanks for your question and photo.  That looks just like I would expect the day after liquid nitrogen.  Follow your dermatologist's post-care instructions and stay out of the sun, and it will probably come out very nicely.  Liquid nitrogen is a very old and frequently used treatment for a variety of skin lesions in dermatology.  Best of luck!

Liquid nitrogen (cryotherapy) is used to treat a wide range of skin conditions, including keratoses, warts and age spots. It is one of our oldest dermatology treatments. Since this treatment doesn't target skin pigment specifically, it works by causing a superficial burn from cold. The spot will look swollen, red and will feel tender for several hours to days after treatment, but your body will heal the burn over the next 2 to 4 weeks. Expect the spot to look worse for a while, but it will heal and look better. This is a standard treatment, so there's no need to worr