Why have my veins suddenly become visible and swollen?

Why have my veins suddenly become visible and swollen?
Although visible veins can be unsightly, their appearance is usually not a cause for concern. Activities such as exercise, skin tone, sun exposure, tight clothing, and high temperatures can cause them to dilate. Aging, genetics, and being overweight can also contribute to increased vein visibility. These dilated and twisted veins are visible beneath the surface of the skin, especially on the legs and feet. Less commonly, however, dilated veins can be a sign of a serious condition, such as a blood clot. If you have visible veins with severe discoloration that is bothersome, consult a doctor.

Understanding the causes of dilated veins.

Woman with a ring.

Source: Pexels.

Veins are blood vessels responsible for carrying deoxygenated blood to the heart. Dilated veins occur when blood pools in weakened or damaged veins instead of flowing effectively to the heart. The circulatory system relies on one-way valves in the veins to prevent blood from flowing backward. When these valves malfunction, blood pools in the veins, causing them to dilate and leak.

Bleeding.
Close-up of bruises on the body.
Source: Pexels.
Bleeding can occur in both small and large veins. Spider veins develop in small blood vessels, or capillaries, when blood pools within them. These veins form thin, spider-like structures that extend across the face and legs. Spider veins are red or blue in color and appear flat on the skin’s surface.

Unlike their larger counterparts, spider veins rarely protrude from the skin’s surface. Spider veins rarely require medical intervention. Most patients seek treatment for spider veins to improve their appearance, not to address health issues. The thin structure of spider veins distinguishes them from varicose veins. Although varicose veins can cause pain, swelling, and other symptoms, spider veins are usually asymptomatic.

Learn more: 9 Ways to Remove Unwanted Scars from Your Legs

Other Factors That Contribute to the Formation of Bulging Veins

Photo of a hand with blue veins.
Source: Pexels.

Several factors contribute to the development of bulging veins. Over time, with age, venous structures naturally weaken, making older people more susceptible to developing visible veins. Hormonal changes during pregnancy, menopause, or the use of birth control pills can also weaken venous structures. Standing or sitting for prolonged periods restricts proper blood circulation, increasing pressure in the leg veins.

Learn more: 5 Types of Pain You Should Never Ignore