Wart seeds look like tiny black or dark brown dots scattered across the surface of a wart, often described as small pinpoints or specks. Despite the name, they aren’t actual seeds. They’re small blood vessels that have grown up into the wart tissue and clotted, creating those distinctive dark spots visible to the naked eye.
What You’re Actually Seeing
The “seeds” inside a wart are thrombosed capillaries, which is a technical way of saying tiny blood vessels where the blood has clotted and darkened. When the human papillomavirus (HPV) infects skin cells and triggers a wart to grow, it also stimulates new blood vessel growth into the wart tissue. These vessels supply the rapidly growing wart with blood. Over time, some of those small vessels clot, and the trapped blood turns dark, producing the black or brownish dots you can see on the surface.
This is why warts sometimes bleed more than you’d expect if you nick or scrape them. Those dots aren’t just discoloration. They’re the tips of real blood vessels sitting close to the surface.
Size, Color, and Pattern
The dots are typically pinpoint-sized, roughly the diameter of a pen tip or smaller. They range in color from dark red to brown to black, depending on how long the blood inside has been clotted. Fresh clots tend to look reddish-brown, while older ones appear darker, almost black.
The pattern varies. Some warts have just two or three dots, while others are covered in a dense sprinkling of them, giving the surface a speckled or grainy look. The dots are usually scattered somewhat evenly across the wart rather than clustered in one spot. Combined with the rough, bumpy texture of the wart itself, this speckled appearance is one of the most reliable ways to identify a wart visually.
Warts on Feet vs. Hands
The dots look slightly different depending on where the wart grows. On the hands, warts typically protrude above the skin surface, making the black dots easier to spot. They sit on top of a raised, rough, flesh-colored bump.
Plantar warts, which grow on the soles of the feet, behave differently. The pressure from walking pushes the wart flat or even inward, so it may look more like a thickened patch of skin with dots embedded below the surface. You might need to look closely or even pare away a thin layer of callused skin before the dark specks become visible. This is one reason plantar warts are sometimes mistaken for calluses or corns at first glance.
How to Tell Warts Apart From Corns and Calluses
The black dots are actually one of the best ways to distinguish a wart from a corn or callus. Corns are hard, raised bumps surrounded by dry, flaky skin, but they have a smooth, uniform center without any dark specks. Calluses are simply areas of thickened skin with no distinct internal features at all.
Warts, by contrast, have a grainy, fleshy texture with those characteristic black pinpoints scattered through them. If you look at a suspicious spot on your foot and see dark dots embedded in rough, slightly bumpy tissue, it’s almost certainly a wart rather than a corn. If you see a smooth, hard center surrounded by dry skin, it’s more likely a corn.
What the Dots Mean During Treatment
If you’re treating a wart at home with salicylic acid or another over-the-counter method, the black dots serve as a useful progress marker. As the wart tissue is gradually broken down and filed away, you’ll notice the base of the wart starting to look more like normal skin. But as long as you can still see black dots or grainy texture, the wart isn’t fully gone.
Treatment is considered complete when the area looks the same as the surrounding skin, with no visible dark specks and no rough or grainy patches remaining. Stopping too early, while dots are still present, often leads to the wart growing back, since the blood supply and infected tissue haven’t been fully eliminated.
They Don’t Spread on Their Own
One common misconception is that the “seeds” can fall out and plant new warts elsewhere. That’s not how it works. The dots are clotted blood vessels, not viral particles. Warts do spread through skin-to-skin contact and through HPV carried on surfaces, but the dark dots themselves aren’t the mechanism. Picking at a wart can potentially spread the virus to other areas of your skin through your fingers, but that’s because of the virus in the wart tissue, not because seeds are being transplanted.