The dog days of summer are here. Despite the heat, it’s still great to be outdoors, but whenever I set eyes on sunburned shoulders or bright red faces, I cringe—not just because it must be painful, but also because sunburns seem to be a risk factor for developing skin malignancies down the road. You may have heard that skin cancers are on the rise. Of the three types of skin malignancies, melanoma is the most dangerous. While fortunately it’s the least common of skin cancers, it accounts for about three-quarters of skin cancer deaths. So how does one recognize an early melanoma? When it comes to moles, remember ABCDE: A for...