Broken capillaries (medically known as talengiesctasia) occur when blood vessels beneath the surface of the skin dilate. The capillary itself isn’t actually broken, but rather the walls are weakened, causing a small build-up of blood. It’s this pooling of blood that can be seen on the surface of the skin. There are several factors that contribute to the formation of spider veins, including:
Some individuals are genetically predisposed to their formation
Alcoholism can cause blood vessels to dilate, resulting in spider veins.
As the skin ages, the effects of external and internal factors become more prominent. The skin becomes thinner, making imperfections more visible.
Excessive coughing places pressure on the blood vessels in the face, which can result in the dilation that leads to the appearance of spider veins.