can
become rough and flaky
It may appear darker or dull
It can thicken over time
Regular moisturizing often improves this condition.
Hyperpigmentation
Hyperpigmentation occurs when certain areas of skin produce more melanin.
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This can be caused by:
Sun exposure
Irritation or inflammation
Previous skin injury
The ankles are especially prone because they are often exposed and subject to friction.
Acanthosis Nigricans
In some cases, thick, darkened skin may be linked to a condition called Acanthosis Nigricans.
This condition is often associated with:
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Insulin resistance
Weight gain
Hormonal imbalances
It typically appears as velvety, dark patches of skin and may occur around the neck, armpits, or ankles.