Lipodermatosclerosis: Which Is Better, 20–30 or 30–40 mmHg?

For lipodermatosclerosis (a chronic hardening and inflammation of the skin, classified as CEAP stage C4b of venous disease), therapeutic compression is often used to manage severe swelling and support skin health ^[1]. While a pressure of around 40 mmHg is sometimes targeted to treat established lipodermatosclerosis or active venous ulcers, there is no single “correct” pressure for every patient ^[1]. A level of 20–30 mmHg is also frequently prescribed, especially as a cautious starting point, for those with mixed arterial disease, or when higher pressures are too painful or difficult to apply ^[2][1]. The right choice is highly individualized and must be determined by a healthcare professional based on your arterial circulation, your ability to tolerate the garments, the shape of your limb, and the presence of any open wounds ^[2][1][3].

Why You Need a Professional Assessment First

You should never try to guess your compression level, purchase high-compression garments online, or increase your pressure without a medical evaluation. Before prescribing a compression level, your doctor must ensure it is safe for you by checking for:

• Arterial Circulation: Your doctor will usually check the blood flow in your arteries using an Ankle-Brachial Index (ABI), which compares blood pressure in your ankle to your arm ^[4]. If your ABI indicates severe peripheral arterial disease (often an ABI below 0.5), standard or high sustained compression is generally contraindicated because it risks worsening blood flow and causing skin injury ^[5]. In cases of moderate mixed arterial and venous disease (ABI 0.5–0.8), a specialist may cautiously prescribe a modified lower pressure (such as 20–30 mmHg), but this requires careful monitoring ^[2]. Note: If you have diabetes, chronic kidney disease, or arterial calcification, an ABI can be falsely high or unreliable (such as an ABI > 1.3); in these cases, other tests like a toe-brachial index or Doppler ultrasound are needed ^[4][6].
• Other Health Conditions: High compression may also be unsafe if you have decompensated heart failure, severe peripheral neuropathy (loss of protective sensation), or an untreated acute skin infection ^[7][8].

Comparing Compression Options

Medical compression garments are categorized by the amount of pressure they are designed to apply to the ankle, measured in millimeters of mercury (mmHg). Note that product classifications (like “Class 2” or “Class 3”) vary by country and manufacturer, so doctors usually prescribe a specific mmHg range.

• Lower Pressures (15–30 mmHg): These ranges are often used to manage symptoms in earlier stages of venous disease or to help prevent swelling ^[1]. A pressure of 20–30 mmHg may be prescribed by a specialist as a modified compression for mixed arterial disease, or as a starting level to help you get used to wearing the garments ^[2][1].
• Higher Pressures (30–50 mmHg): Pressures of 30–40 mmHg or higher are often considered for substantial venous swelling, established lipodermatosclerosis, or active venous ulcers (CEAP C6) ^[1]. While higher compression can sometimes be more effective at reducing deep swelling, its benefit depends heavily on whether the garment fits properly, the stiffness of the material, and your mobility (such as using your calf muscles by walking) ^[1][9].

The prescribed number on the box is the nominal pressure, but the pressure actually delivered to your leg changes based on the stiffness of the material, the shape of your limb, and how much your swelling goes down throughout the day ^[9].

Factors That Influence Your Prescription

Beyond checking your circulation, your care team will consider practical factors to find the safest and most effective option:

• Pain and Tolerance: Acute lipodermatosclerosis can be extremely painful, making high-pressure garments intolerable ^[3]. A pressure level you can put on correctly and wear consistently is much more useful than a higher-pressure garment that you cannot tolerate ^[10].
• Limb Shape and Swelling: If you have severe swelling (edema) or an unusually shaped limb, standard stockings may wrinkle, roll, or bunch up. This can create focal areas of high pressure that lead to skin damage (pressure injuries) ^[9][8]. Instead, your team may start with short-stretch bandages (stiff bandages applied by a professional that provide low resting pressure but high working pressure when you walk) or padding to decongest the leg before fitting you for a long-term garment ^[11].
• Physical Ability and Dexterity: Firm compression stockings require significant hand strength and mobility to apply ^[12]. If arthritis or frailty makes applying a tight stocking impossible, your doctor might recommend an adjustable Velcro wrap, a lower pressure, or specific application aids ^[13][14].
• Venous Ulcers: If you have an active open sore (venous ulcer), compression can be a crucial part of treatment to support healing, but the type of garment must be compatible with your wound dressings and managed by a wound care specialist ^[1][15].

Setting Expectations and Monitoring for Safety

Compression is intended mainly to reduce venous pressure and swelling, protect the skin, and support healing. While your pain and swelling may improve, the established hardened, fibrotic skin of lipodermatosclerosis may improve very slowly or persist ^[1][16].

Because your leg size and condition will change, your compression needs to be professionally reassessed over time ^[9].

When to Seek Immediate Medical Advice:
Remove your compression garment and contact your care team promptly if you experience:

• Increasing pain, or severe pain that comes on suddenly.
• Numbness, tingling, or a new loss of sensation in your feet or legs.
• Toes that turn cold, pale, or blue.
• Signs of skin damage, rubbing, or blistering from the garment.
• A sudden, dramatic increase in swelling, especially if it is only in one leg, or if you develop new chest pain or breathlessness (these require urgent emergency evaluation).