Premium Nahrungsergänzungsmittel | artgerecht

Lipohypertrophy: Causes, Symptoms & Treatment

Lipohypertrophy is a localized thickening of the fatty tissue beneath the skin, most commonly caused by repeated insulin injections. It leads to firm lumps and can impair insulin absorption.

Regular tips about health Regular tips about health

Things worth knowing about "Lipohypertrophy"

Lipohypertrophy is a localized thickening of the fatty tissue beneath the skin, most commonly caused by repeated insulin injections. It leads to firm lumps and can impair insulin absorption.

What is Lipohypertrophy?

Lipohypertrophy refers to a localized overgrowth or thickening of the subcutaneous fat tissue -- the fatty layer just beneath the skin. It most commonly develops as a reaction to repeated injections of insulin into the same site, and is a well-recognized complication in people with diabetes mellitus. Affected areas feel rubbery, firm, or lumpy to the touch and are usually painless.

Causes

The most frequent cause of lipohypertrophy is the repeated injection of insulin into the same location, as commonly seen in people with type 1 or type 2 diabetes who self-administer insulin. Key contributing factors include:

Failure to rotate injection sites systematically
Reuse of the same injection needle multiple times
Use of needles that are too short or incorrect injection technique
Use of human (non-analogue) insulin
High insulin doses and frequent daily injections

Less commonly, lipohypertrophy may also develop with other subcutaneously injected medications such as growth hormone or heparin, or due to chronic mechanical irritation of the skin.

Symptoms

The characteristic signs of lipohypertrophy include:

Palpable lumps or firm nodules beneath the skin at injection sites
Altered skin texture (swollen, uneven, rubbery)
Visible bulging or raised areas of the skin
Usually no pain, occasionally mild tenderness on pressure

A significant medical concern is that insulin injected into lipohypertrophic tissue is absorbed unpredictably and more slowly, leading to erratic blood glucose levels and difficulty achieving stable diabetes control.

Diagnosis

Diagnosis is typically made through a physical examination, during which the healthcare provider palpates the injection sites to assess tissue changes. A skin ultrasound can be used for more detailed evaluation, allowing visualization of the extent of subcutaneous tissue changes. A biopsy is generally not required.

Treatment and Prevention

The most important measure is the consistent rotation of injection sites, cycling systematically between body areas (abdomen, thighs, buttocks, upper arms) and within each area. Additional recommendations include:

Using a new needle for every injection (never reuse single-use needles)
Selecting the appropriate needle length based on body composition
Receiving training in correct injection technique from a certified diabetes educator
Regular inspection of injection sites during medical check-ups

Existing lipohypertrophy often resolves over several months when the affected areas are consistently rested. Surgical or invasive interventions are rarely needed. After switching to healthy tissue, insulin doses may need to be adjusted, as absorption rates become more reliable and predictable.

References

Blanco M. et al. - Lifting the lid on lipohypertrophy. Diabetes & Primary Care, 2013.
Frid A. H. et al. - New insulin delivery recommendations. Mayo Clinic Proceedings, 2016; 91(9): 1231–1255.
American Diabetes Association - Standards of Medical Care in Diabetes, 2023. Available at: www.diabetesjournals.org

Building Blocks for a Healthy Life

As an integrated manufacturer, we develop & produce evidence-based, patented, and non-patented formulations. We work exclusively with plant and natural extracts according to the strictest purity & quality standards.
The combination of science & modern technology with the laws of nature creates solutions consistently tailored to humans – for the highest good: health.