Dark, thickened, and slightly textured patches on the neck, underarms, or groin can sometimes resemble dirt, but they may actually point to Acanthosis Nigricans. This condition is frequently associated with elevated blood sugar levels or problems with the body’s use of insulin. HealthConditions
These areas do not disappear with scrubbing or washing and are not the result of poor hygiene.
Acanthosis Nigricans is not a disease itself—it often serves as a signal that something else may be happening in the body. HealthConditions
It is most often linked to insulin resistance, excess body weight, hormonal disorders, genetics, and in uncommon cases, certain medications or tumors.
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