iv) Allergies
The eye area is sensitive and can easily develop allergies. Eye allergies, as well as skin allergies like eczemas/atopic dermatitis, can lead to dark under-eye areas due to the constant rubbing and itching around the eyes. It leads to inflammation, redness and dryness around the eye.
v) Acanthosis nigricans
This is a skin condition in which there is insulin resistance in the body and certain areas become dark. Some of the most common areas are the back, underarms, the inner side of the thighs and the under-eye area. It is most commonly associated with obesity and PCOS.
vii) Genetics
You can be genetically predisposed to a darker under-eye area and it may run in your family.

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