Varicose Veins During Pregnancy

Varicose veins are one of the most common vascular changes during pregnancy. Hormonal shifts, increased blood volume, and pressure from the growing uterus all combine to place extra strain on the leg veins.

Why pregnancy causes vein changes

Rising progesterone levels relax the vein walls, and the expanding uterus can compress the pelvic veins that carry blood back from the legs. This slows venous return, raises pressure in the lower legs, and can cause new varicose or spider veins to appear — often for the first time.

Safe ways to manage symptoms during pregnancy

Graduated compression stockings, regular walking, leg elevation when resting, avoiding long periods of standing, and sleeping on the left side can all help reduce discomfort and swelling. Vein procedures are generally postponed until after delivery.

When to seek an evaluation after delivery

Many pregnancy-related varicose veins improve within three to six months postpartum. If visible veins, heaviness, aching, or swelling persist beyond that window — or if you develop skin changes or a painful, warm, swollen area in the leg — a vein evaluation is a reasonable next step.

When to call your doctor sooner

Sudden calf pain, redness, or swelling during or after pregnancy can be a sign of a blood clot and needs urgent medical attention. This article is educational and does not replace advice from your obstetrician or a vascular specialist.