Diagnosing lipedema: criteria, ultrasound and why BMI is misleading

On average it takes 18 years from the first symptoms of lipedema to a diagnosis, and women see several doctors along the way [10]. This is not because the disease is hard to recognise, but because few specialists know its criteria. Here we explain how lipedema is diagnosed according to current international recommendations and what you can check yourself before a consultation.

How the diagnosis is made

The 2026 international consensus sets out the key principle: the diagnosis of lipedema is clinical and is based on the medical history, physical examination and exclusion of other conditions [1]. What matters most is the conversation with the doctor and the examination, not a single test or scan.

The consensus also states clearly that no imaging, blood or genetic test or measuring instrument is officially approved to confirm lipedema [1]. Additional tests are needed mainly to rule out other causes of enlarged legs and swelling. The German S2k guideline of 2024 takes the same approach [2].

Seven signs the doctor looks for

These are the features that international experts consider typical of lipedema [1]:

1. Symmetry. Enlargement of the subcutaneous fat on both sides, mainly on the legs.
2. Disproportion. The limbs are clearly larger than the torso. Top and bottom clothing sizes often differ by several sizes.
3. Arms. Lipedema can also affect the arms, again symmetrically.
4. Slim feet and hands. The enlargement “stops” above the ankle or wrist.
5. Pain and tenderness. The tissue hurts when pressed, pinched or stretched, and the pain is limited to the lipedema areas.
6. Easy bruising in the affected areas.
7. No pitting on pressure, and the Stemmer sign is usually negative: the skin on the back of the second toe can be pinched into a fold. In lymphedema this is often impossible.

Women also often describe swelling or heaviness in the legs [1] that gets worse in hot weather [4].

How much more common these symptoms are in lipedema

In a large US study, the answers of 707 women with lipedema were compared with those of 216 women without it, adjusted for age and body mass index [4]. The odds ratio shows how much more likely a symptom is in women with lipedema.

In the same study, 70.3% of women had upper arm involvement and 21.2% reported swollen feet [4]. So “slim feet” is a typical but not absolute sign, which is why the diagnosis is always based on the overall picture rather than a single feature.

Why BMI is misleading and what to use instead

Body mass index (BMI) is weight divided by height squared. In lipedema it is often high because the legs are heavy. As a result, a woman with lipedema is easily labelled “obese”, even though her torso and waist may be relatively slim.

The 2026 consensus states that BMI has limited value in distinguishing lipedema from obesity and recommends the waist-to-height ratio [1]. All three measures should be recorded at the examination: BMI, waist-to-height ratio and waist-to-hip ratio.

You can calculate your waist-to-height ratio yourself: waist circumference (cm) ÷ height (cm). The UK’s National Institute for Health and Care Excellence (NICE) advises keeping your waist to less than half your height, i.e. a ratio below 0.5 [7]. For example, at a height of 168 cm, your waist should be less than 84 cm.

If the waist-to-height ratio stays within the normal range despite a high BMI, this strongly suggests that the excess tissue is concentrated in the limbs — the typical picture of lipedema.

Why ultrasound helps

Although no imaging method is officially approved to confirm lipedema [1], ultrasound gives the doctor two important pieces of information.

First, the thickness of the subcutaneous tissue. In the German Lipödem-3 study, the thickness of the skin and subcutaneous tissue was measured 8 cm above the inner ankle. Without lipedema it was about 11 ± 2.8 mm, and with lipedema about 16 mm [5]. In 2021, Brazilian researchers proposed thickness cut-off values for several points on the leg. The measurement on the front of the shin best distinguished women with and without lipedema, followed by the thigh and the outer side of the lower leg [6].

Second, the state of the veins. Vein disease often occurs together with lipedema: in a Spanish survey of 1,001 patients, 47.2% had venous insufficiency of the legs [9]. A duplex scan can detect it so that it is taken into account in the treatment plan, including before surgery.

Lipedema, obesity and lymphedema: how to tell them apart

The table summarises the international consensus, the German guideline and the US recommendations [1] [2] [3]. Importantly, the conditions can coexist: obesity often accompanies lipedema, and lymphatic congestion may develop over time [1]. For more on the difference from obesity, see “Lipedema or obesity: 6 differences”.

Stages and types: what they mean

Lipedema is traditionally divided into stages (by the condition of the skin and tissue) and types (by location). But the 2026 consensus cautions that stages do not reflect the severity of symptoms and are of limited use in choosing treatment, while the classification by location is only descriptive [1]. A woman with stage I may have more pain than a woman with stage III. That is why the doctor assesses not only how the legs look, but also pain, mobility and quality of life.

Diagnosis code: ICD-11 EF02.2

For a long time, the International Classification of Diseases had no separate code for lipedema. ICD-11, which came into effect on 1 January 2022, introduced code EF02.2 “Lipoedema” in the section on disorders of the dermis or subcutis. The WHO describes it as non-pitting, diffuse “fatty” swelling, usually of the legs, thighs, hips and upper arms, which may be confused with lymphoedema [8].

How diagnosis works at our clinic

At a consultation at our clinic in Kyiv, the doctor:

• asks in detail when the changes started and how they relate to hormonal periods, weight and family history;
• examines the legs and arms, checking tissue tenderness, the Stemmer sign and any swelling;
• measures circumferences, height and weight and calculates BMI and waist-to-height ratio;
• performs an ultrasound to assess the subcutaneous tissue and, if needed, the veins;
• explains the diagnosis and treatment options, from conservative therapy to lymph-sparing liposuction.

Before your visit you can take our screening questionnaire. The consultation fee is listed on the prices page.