The skin around my ankles is getting darker and thicker over time. What causes this?

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:

Try Science Kits

Insulin resistance

Weight gain

Hormonal imbalances

It typically appears as velvety, dark patches of skin and may occur around the neck, armpits, or ankles.Poor Circulation
Circulation issues can also affect the skin’s appearance.
When blood flow is reduced:

CONTINUED ON THE NEXT PAGE.

Skin may appear darker or slightly swollen
Tissue may thicken over

time
This is more common in people