Black bumps on the skin can be caused by angiokeratomas, which are noncancerous skin growths. These bumps appear when tiny blood vessels near the skin's surface enlarge or break, and the skin's surface thickens in that area.
Understanding Angiokeratomas
Angiokeratomas are a type of benign tumor that often appear as small, raised bumps on the skin. Here's a breakdown:
What Causes Them?
- Enlarged Capillaries: The condition arises from dilated or broken capillaries, which are tiny blood vessels close to the skin's surface.
- Skin Thickening: The skin over these affected vessels thickens, contributing to the bump-like appearance.
Appearance
- Color: Angiokeratomas can manifest in various colors, including:
- Red
- Blue
- Purple
- Black
- Texture: They are typically hard to the touch.
Key Takeaways
| Feature | Description |
|---|---|
| Cause | Enlarged or broken capillaries and thickened skin. |
| Color | Red, blue, purple, or black. |
| Texture | Hard bumps on skin. |
| Nature | Noncancerous (benign) tumors. |
Important Note
While angiokeratomas are generally harmless, it's always best to consult a doctor or dermatologist for any new or changing skin bumps to ensure proper diagnosis and treatment if needed.
