And underneath your skin lies a vast network of blood vessels. Spread out, this network of veins, arteries, and capillaries would extend over 100,000 miles. That's long enough to wrap around Earth ...

Medically reviewed by Casey Gallagher, MD Red spots on the skin can appear for a variety of reasons, ranging from harmless to potentially serious conditions. They can be caused by simple irritants ...

The blood vessels swell and become blocked with blood clots, called thrombi, eventually damaging or destroying skin tissues. Sometimes, this can lead to infection and gangrene. Initial symptoms ...

The signs of a dangerous blood clot can vary depending on its location. Some people may also not experience any symptoms.

But what exactly is a bruise? Bruising can occur as a result of an injury or a knock; blood vessels underneath the skin break or burst and blood leaks out under the skin. This causes the purplish ...

that is able to visualize vessels underneath the skin. A feasibility study to the clinical use of the prototype in the procedure of blood withdrawal in children was performed. Methods: The ...