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Acanthosis Nigricans: The Skin Condition Signaling Metabolic Troubles
16 Nov
Summary
- Acanthosis Nigricans is a skin condition linked to insulin resistance and diabetes risk
- It appears as dark, velvety patches on skin folds and can be an early warning sign
- Treating the underlying cause, such as obesity or insulin resistance, can help improve the skin condition

As of November 16th, 2025, Acanthosis Nigricans (AN) has emerged as an important early warning sign for prediabetes and diabetes. This skin condition, marked by dark, velvety patches on skin folds, is strongly associated with insulin resistance, a precursor to metabolic disorders.
For many individuals, AN is one of the first visible clues that their body is struggling to regulate blood sugar levels. The skin changes develop gradually over several months, often appearing in areas like the neck, underarms, or groin. While AN can have various causes, it is most commonly linked to obesity, insulin resistance, and metabolic syndrome.
Recognizing AN is crucial, as it provides an opportunity to detect and address underlying metabolic issues before they progress. Doctors recommend that those with AN undergo blood tests to check for prediabetes or diabetes. Treating the root cause, such as through weight loss, lifestyle changes, or medication for insulin resistance, can help improve the skin condition.
In addition to medical interventions, topical treatments and therapies can also aid in reducing the pigmentation and softening the affected areas. By taking early action, individuals with AN can take steps to protect their long-term health and prevent the onset of serious complications associated with diabetes.




