If you have heavy, aching legs, swelling by the end of the day, or visible varicose veins, chances are someone has recommended compression stockings. They are one of the oldest and most reliable tools in vein care — and when chosen and worn correctly, they can make a real difference in how your legs feel. This guide explains how they work, what the numbers mean, and how to fit them into your routine.
How Graduated Compression Works
Medical compression stockings are graduated, meaning they are tightest at the ankle and gradually looser as they move up the leg. This design gently squeezes the leg from the outside, helping the veins and calf muscles push blood back toward the heart against gravity. The result is less pooling of blood in the lower legs, which can ease swelling, aching, heaviness, and fatigue. It is important to understand that stockings help manage symptoms — they do not cure the underlying valve failure (venous reflux) that causes most vein problems.
Understanding Compression Levels (mmHg)
Compression strength is measured in millimeters of mercury (mmHg). Higher numbers mean firmer compression. Common ranges include:
- 15–20 mmHg — Light, over-the-counter compression. Often used for mild swelling, tired legs, travel, and general prevention.
- 20–30 mmHg — Medical-grade compression. Frequently recommended for varicose veins, moderate swelling, and after certain vein procedures.
- 30–40 mmHg — Firmer medical-grade compression. Used for more significant venous disease and specific conditions under a physician's guidance.
Stronger is not automatically better. The right level depends on your symptoms and diagnosis, which is why medical-grade stockings should be selected with input from your vein specialist.
Choosing, Measuring, and Fitting
A proper fit matters more than almost anything else. A stocking that is too loose will not help, and one that is too tight can be uncomfortable or restrict circulation. Legs are usually measured in the morning before swelling develops. Stockings come in different lengths — knee-high, thigh-high, and pantyhose styles — and the best choice depends on where your symptoms are. If you are unsure, ask us to help you measure and select the correct size and style.
Putting Them On and Caring for Them
- Put stockings on first thing in the morning, before swelling starts
- Roll or bunch the stocking down to the heel, then ease it up gradually and smooth out wrinkles
- Rubber gloves or a stocking donner can make application much easier
- Wash them regularly in mild soap; this keeps the elastic fibers working and hygienic
- Replace them roughly every few months, or sooner if they lose their stretch
When and How Long to Wear Them
Most people benefit from wearing compression stockings during the day, when they are upright and active, and taking them off at night. Consistency is key — wearing them daily is far more helpful than wearing them occasionally. Dr. Abdullah will give you specific guidance based on your situation.
Their Role Before and After Treatment
Compression stockings play two important roles in vein care. Before treatment, many insurance plans require a documented trial of conservative therapy — typically including a period of wearing medical-grade compression stockings — before they will approve procedures for varicose veins. You can read more about this on our insurance page. After procedures such as radiofrequency ablation, VenaSeal, or sclerotherapy, compression helps support healing and comfort. The exact requirements vary by procedure, so always follow the specific instructions you are given.
Not sure which compression level is right for you? Dr. Abdullah offers free consultations at our Georgetown clinic.
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