Seborrheic keratoses are very common, benign (non-cancerous) skin growths that typically appear as waxy, raised, or scaly spots. They can range in color from light tan to dark brown or black.

The exact cause is unknown, but they tend to develop with age. Genetics also play a role, so if your parents or grandparents had them, you're more likely to develop them as well. Sun exposure may also contribute to their development.

No, seborrheic keratoses are not contagious. You cannot catch them from someone else or spread them to others.

They often start as small, rough bumps and gradually thicken, developing a waxy or “stuck-on” appearance. They can be flat or raised, and their texture can vary from smooth to rough and scaly.

They can appear anywhere on the body, but are most common on the chest, back, face, and neck.

Usually, they are asymptomatic. However, they can sometimes become irritated, itchy, or bleed if rubbed or scratched.

No, seborrheic keratoses are benign. However, it's important to have any new or changing skin growths examined by a dermatologist to rule out other skin conditions, including skin cancer.

We can typically diagnose seborrheic keratoses through a visual examination. In some cases, a biopsy may be performed to confirm the diagnosis.

Treatment is not medically necessary, but options for removal include:

• Cryotherapy (freezing)

• Electrocautery (burning)

• Shave excision

• Laser treatment

• Chemical peels.

While individual lesions can be removed, new seborrheic keratoses may develop in other areas over time, as they are a natural part of the aging process.