. A more systemic approach may determine the presence of an underlying hormonal imbalance as in the case of obesity (acanthosis nigricans), adrenal problems and even diabetes. Pregnancy may lead to darkening of certain areas of the body. There is an association between substances within the body that regulates weight/stress and substances that are responsible for pigmentation.
Are there any current weight problems?
Any adrenal problems or increase in blood sugar levels lately?