Brown pigmented spots dot aging skin
Both common types are benign
TORONTO Middle age often carries with it a number of advantages. But as acne becomes a distant memory for most people, other issues.
Sun spots, age spots, liver spots, granny warts — whatever you call them, brown pigmented spots are common eruptions as we age.
Assessing and excising these pigmented spots is a daily event for skin doctors.
“Pigmented lesions and brown spots are a huge part of dermatology,” says Dr. Lisa Kellett, a Toronto dermatologist.
There are two main types of these pigmented brown spots, solar lentigines and seborrheic keratoses. The good news is that both are benign; they are not early manifestations of skin cancer.
But people should not self- diagnose what they are seeing, Kellett says. She tells her patients she wants to see them if they develop new spots or moles, or if existing ones change. Dr. Benjamin Barankin agrees. Medical director of the Toronto Dermatology Centre, Barankin says these types of pigmented brown spots are not directly linked to a higher risk of skin cancer. But these spots pop out when people are older — which is also the time when the risk of developing cancerous melanomas increases.
As well, people who have these spots may become complacent — — and miss a melanoma hiding among an array of pigmented spots on their backs, Barankin says.
So what are solar lentigines and seborrheic keratoses?
Let’s start with lentigines. If you can picture the hands of an elderly white adult, you probably know what they are. As freckles can dust the nose and the cheeks of some fair- skinned folks, brown spots can mottle the skin on the back of some aging hands.
Lentigines or lentigos are like freckles, says Barankin. But where a true freckle will fade in the winter when sun exposure is limited, these spots do not go away on their own.
Lentigos are the result of sun exposure. If you are fair skinned and you don’t want them dotting the backs of your hands, limiting sun exposure or protecting your skin with a sunscreen with a sun protection factor, or SPF, of at least 30 is advised.
Dermatologists can zap these spots off using either a laser or liquid nitrogen. The procedure is not covered by medicare. And if your skin is prone to developing lentigines, unless you protect it from the sun you will likely develop more.
The other type of pigmented brown spot is a seborrheic keratosis — or keratoses, if you have more than one. People who develop these crusty, dark brown spots often do have more than one.
Barankin sees patients with dozens of these spots, which are generally found on the torso. They are not caused by sun exposure. “You cannot prevent them,” he says. “It’s your genetics and getting older.”
Dermatologists can also zap off seborrheic keratoses, using the same techniques as they do for lentigines.