If you’re dealing with swollen legs or feet, you may have been told to wear compression socks by your doctor or physical therapist. But how long should you wear compression socks? Figuring this out can be confusing, especially when living with chronic swelling or a condition like lymphedema.

The answer depends on what’s causing your swelling.

For chronic conditions like lymphedema or venous insufficiency, you typically wear them all day and take them off at night. For temporary swelling from travel or standing at work, a few hours might be enough. For post-surgical swelling, your doctor will give you specific instructions.

Let’s take a closer look:

What Are Compression Socks?

Compression socks are special garments that apply graduated pressure to your legs and feet. The pressure is strongest at your ankle and gradually decreases as it moves up your leg, which helps push fluid out of swollen areas and improve blood flow.

These socks come in different compression levels, measured in millimeters of mercury (mmHg). Light compression (8-15 mmHg) works for mild swelling, and stronger compression (20-30 mmHg or higher) is for more serious conditions.

Compression socks help your body to:

• Reduce fluid buildup by pushing lymphatic fluid and blood back up your legs.
• Prevent blood from pooling in your lower legs when you sit or stand
• Support your veins and help them work better
• Decrease inflammation and improve tissue health in the affected area

You need a prescription for medical-grade compression socks (20 mmHg and higher), which ensures you get the right pressure level for your condition.

Learn more about how to put compression socks on.

What Conditions Do Compression Socks Help?

You can wear your compression socks for many different medical conditions that cause leg and foot swelling, such as:

• Lymphedema
• Venous insufficiency
• Deep vein thrombosis (DVT)
• Post-surgical swelling
• Varicose veins

Compression stockings are commonly prescribed for medical conditions, but the graduated compression can also help with general swelling.

For example, many people wear them during pregnancy or when their job requires sitting or standing for long periods. It’s also often recommended for people who are at a high risk of developing blood clots.

Learn more about what to do when you have swelling in one foot only.

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How Long Should You Wear Compression Socks for Swollen Feet?

For most people with swollen feet, you should wear compression socks during the day and take them off at night before bed. This means putting them on first thing in the morning (ideally before your swelling starts) and removing them when you’re ready to sleep.

This is because swelling tends to get worse when you’re upright and moving around. Lying down at night naturally helps fluid drain, so you typically don’t need the extra compression while you sleep.

That said, there are also special nighttime compression garments that you can wear to reduce swelling while you sleep, which can be helpful depending on the degree of your swelling.

If you’re new to compression socks, I sometimes recommend starting with a few hours at a time and adding an hour or two on after a couple of days, building up to a full day. 

Compression Socks for Lymphedema

Lymphedema is a chronic condition where lymph fluid builds up in your body and causes swelling, often in your legs or feet. It can develop as a result of an injury or cancer treatment.

Compression therapy is one of the most effective treatments for lymphedema, and it’s something I often prescribe to my patients as a certified lymphedema therapist (CLT-LANA).

If you have lymphedema, you usually need to wear your compression socks for 23 hours per day (off for an hour to bathe). You wear regular compression socks during the day, and often a compression garment at night (not socks). 

However, this is a general recommendation, and you should listen to your doctor or physical therapist for what they recommend for you personally.

Wearing compression socks can also help prevent lymphedema.

One study followed 301 breast cancer patients and found that wearing compression garments (20-25 mmHg) for 8 hours daily from surgery through 3 months after treatment made a big difference.

Only 14.5% of patients who wore compression developed lymphedema, compared to 24.8% who didn’t wear it.

Learn more about compression therapy for lymphedema.

Can You Leave Compression Socks on Too Long?

Yes, and it’s not a good idea. Wearing compression stockings or socks for too long can cause:

• Skin irritation, rashes, or breakdown
• Reduced blood circulation
• Moisture buildup that leads to infections or fungal growth
• Discomfort

Most people should wear compression socks for 8-12 hours during the day and then take them off at night. If you notice any pain, numbness, tingling, or skin irritation, talk to your healthcare provider.

Compression Socks Recommendations

Here are some of my favorite compression socks and stockings that I’ve personally tested and recommend as a physical therapist and lymphatic specialist.

How Do I Know If Compression Socks Are Working?

You will notice less swelling compared to when you don’t wear them. 

Your legs should feel lighter and less heavy, and any tightness or discomfort from fluid buildup should go down. For lymphedema, you might also notice that your skin feels softer and your affected limb measures smaller.

If you’re not seeing any improvement after a few weeks of consistent wear, you might need a different compression level or a professional fitting to make sure your socks fit correctly.

FAQs

Can I sleep with compression socks on?

Most people should not sleep in compression socks. However, some people with lymphedema do benefit from nighttime compression. If that’s the case, you’ll use special nighttime garments that provide lighter, more comfortable pressure than daytime compression socks. Your lymphedema therapist or doctor will tell you if you need nighttime compression and help you get the right garments.

Should compression socks leave indentations?

Mild indentations from the sock bands are normal and usually fade shortly after you take your socks off. These temporary marks just show that the socks were doing their job by applying pressure.

Deep indentations that stay for several hours, cause pain, or create red marks are not normal. This means your socks are too tight or not fitting properly. You usually need to get refitted for the correct size and compression level to avoid damaging your skin or restricting circulation.

Why do my legs ache after wearing compression socks?

Your legs might ache when you first start wearing compression socks because your muscles and circulatory system are adjusting to the pressure. This is common and usually goes away after a few days of consistent wear.

If the aching continues or gets worse, your compression level might be too strong, or your socks might not fit correctly. Pain, severe aching, or cramping are signs that something isn’t right. Stop wearing the socks and talk to your healthcare provider about getting a different compression level or a proper fitting.

Living with Chronic Leg Swelling or Lymphedema?

If you’re living with lymphedema or chronic leg swelling, I have resources that can help. As a certified lymphedema therapist (CLT-LANA), my patients often ask me about exercises and practical tools that can help them reduce swelling at home, and I want to make this kind of education more accessible.

My signature program, Lower Body Lymphedema Rehab, walks you through everything you need to manage your leg or foot swelling at home.

You can also get started with one of my step-by-step guides to learn exercises, self-care techniques, and daily habits that make a big difference in reducing fluid buildup and improving your quality of life: