Expert Tips & Wisdom

What is an AK?

by Ronald Johnston, MD, FAAD, ABD
An actinic keratosis is considered a pre-cancerous lesion since a small percentage of these lesions over time may develop into a skin cancer, usually a squamous cell carcinoma. Due to its pre-cancerou... More...

Thoughts on Moles (Nevi), Normal

by Ronald Johnston, MD, FAAD, ABD
Atypical or dysplastic moles are a type of mole that appear abnormal, but are benign. A mole (or nevus) is a benign growth of cells that produce pigment in the skin called melanocytes. An atypical ... More...