What are the causes of Spider Veins?
To best understand spider veins, or thread veins a particularly good starting point is to review how the blood circulation system in the body works. Blood is pumped by the heart and carried around the body by our Arteries. The main role of the blood is to carry oxygen to our tissues and cells. After the oxygen has been delivered the blood must be returned to the heart which is the job of our veins. So, the arteries carry the blood away from the heart and veins return it back. To prevent blood from flowing backward, veins have a one-way valve system that ensures blood flows in one direction only.
If for some reason the valves in the legs become damaged or impaired, blood starts flowing in the opposite direction it can pool inside the vein. If the pooling or varicosity is mild, the vein can become slightly enlarged and branch out, leading to spider veins.
The main risk factors for spider veins in the legs are:
- Your Age
- Standing for Long Periods of Time
- Being Overweight
- Hormone Replacement Therapy
Spider Veins are also common on the face. Normally these are caused by the tiny blood vessels rupturing under the skin.
The main risk factors for spider veins on the face are:
- Broken Capillaries due to Rosacea
- Sun Damage
- Excessive Alcohol Consumption
- Excess pressure in the face
- Family History
- Hormone Treatments or Pregnancy