As people grow older, their skin often becomes a surface where different growths and spots appear. Although most of these changes are harmless, they can still cause worry because of how they look or because of symptoms like itching. One frequent type of growth seen in seniors is called seborrheic keratosis. These spots may show up suddenly or form gradually over time, prompting understandable concern about what they might be.Learning what these skin changes represent and why they develop can make them easier to manage. This article explains the dark, waxy bumps your grandpa has on his neck—what they are, how they differ from more serious problems, and what can be done about them.

The dark, waxy spots on your grandpa’s neck are most likely seborrheic keratoses. These are benign (non-cancerous) skin growths that are extremely common in older adults. They usually appear brown, black, or light-colored and have a waxy, scaly, slightly raised look. Their size can range from a few millimeters to more than an inch (about 2.5 centimeters). While they can form anywhere on the body, they most often appear on the chest, back, scalp, and neck.Seborrheic keratoses have several recognizable traits. They often look waxy or as though they were “stuck on” the skin, similar to a bit of melted candle wax or modeling clay. These growths may appear alone or in clusters. They can be flat or raised and usually have a rough or textured surface. Their color ranges from pale tan to deep black. Sometimes they itch, especially if clothing rubs against them or if they are scratched.