Dark Skin On The Neck Is Not Dirt; Doctors Believev It Could Be A Health Warning

Final Up to date:January 14, 2026, 14:50 IST

Docs warn that darkish patches on the neck or underarms might sign insulin resistance and early metabolic points, not poor hygiene.

Docs flag darkish neck patches as an indication of insulin resistance

Darkish, velvety patches on the again of the neck or below the arms are sometimes mistaken for tanning, pigmentation, or poor hygiene. Nevertheless, docs are actually urging folks to pay nearer consideration to those pores and skin adjustments. The situation, often known as Acanthosis Nigricans, is normally innocent by itself however can function an early warning signal of underlying metabolic points.

The subject not too long ago gained consideration after Dr Sunita Sayammagaru shared an statement from her each day commute. Whereas travelling by metro, she famous that numerous folks round her confirmed indicators of Acanthosis Nigricans on the again of their necks.

Physician Factors Out Cause For Darkish Neck

Dr Sunita Sayammagaru wrote on X, “Greater than 50% of individuals in my compartment have Acanthosis Nigricans – these darkish hyperpigmented velvety patches on the again of the neck, armpits, groin folds, within the folds of pores and skin on the stomach….” She wrote that when she checked out them, she realised why that they had darkish necks.

She wrote, “Even the individuals who look slim from behind have it, and lo and behold, once I see them from the entrance, they’ve an excellent potbelly/paunch…not shocking. Acanthosis is among the first indicators of insulin resistance, which is the precursor of diabetes and different metabolic problems.”

Echoing her views, Dr Sayajirao Gaikwad additionally addressed the frequent false impression round darkish necks and underarms. In a follow-up tweet, he wrote, “Acanthosis Nigricans, the darkish velvety pores and skin on the neck or underarms, isn’t about poor hygiene. It’s one of many clearest exterior indicators of insulin resistance. When cells resist insulin, the physique produces extra of it. Extra insulin overstimulates pores and skin cells and pigments resulting in thickened, darkened patches. This isn’t simply beauty. It’s an early crimson flag for prediabetes, sort 2 diabetes, PCOS, fatty liver, and metabolic syndrome.”

Dr Sayajirao urged these life-style adjustments to cut back the darkish spots and management insulin.

• A strict low-carb eating regimen

• Larger protein, wholesome fat

• Weight reduction (even 5–10% issues)

• Resistance coaching & correct sleep

What Is Insulin Resistance?

Insulin resistance happens when the physique doesn’t react successfully to insulin, inflicting the pancreas to supply extra. Over time, this imbalance can result in circumstances equivalent to sort 2 diabetes, hormonal problems, and different metabolic points. As a result of the pores and skin adjustments are seen lengthy earlier than blood assessments present abnormalities, docs say it shouldn’t be ignored.