Acanthosis Nigricans
Definition
Acanthosis nigricans presents as thickened, hyperpigmented skin with a velvety texture, typically found in skin folds including the back of the neck, armpits, groin, and under the breasts. It develops when elevated insulin levels stimulate skin cell proliferation and melanin production through insulin-like growth factor receptors in the skin. It is one of the most visible clinical signs of hyperinsulinemia and insulin resistance. While it may be cosmetically concerning to patients, its primary significance is as a metabolic signal: it indicates insulin resistance that should be tested and addressed rather than treated superficially.
Frequently Asked Question
Why Acanthosis Nigricans Matters
How Spokmed Company Uses It
Acanthosis nigricans is a clinical flag at SPOKEmed — when it appears in a new patient evaluation, it immediately triggers comprehensive metabolic testing: fasting insulin, fasting glucose, A1C, and a full lipid panel. It is documented not as a skin finding but as a metabolic signal. Treatment is the same as SPOKEmed's standard insulin resistance protocol: structured nutrition to stabilize blood sugar (protein at every meal, eating every three hours), GLP-1 therapy when the degree of insulin resistance warrants it, sleep optimization, and follow-up lab work at 90-day intervals to confirm metabolic improvement. As insulin levels normalize, the skin discoloration typically fades — confirming that the metabolic driver has been addressed.