BIOLOGY | MEDICAL | HEALTH on Instagram: "Acanthosis Nigricans appears as dark, thick, velvety patches of skin, most commonly found on the neck, underarms, groin, elbows, knees, or knuckles. Up close, the skin may look rough, folded, or slightly raised, often mistaken for dirt—but it cannot be washed away. This condition is not a disease itself, but a visible signal from the body 🚨. It’s commonly linked to insulin resistance, obesity, hormonal imbalances, or sometimes genetic factors. In rare c