These are dry, dark patches of skin that usually appear in the armpits, neck or groin. This would need a review as it could mean different things.


Dry dark patches mostly around the neck which could be itchy.

Causes of acanthosis nigricans Common cause of acanthosis nigricans is being overweight.

Diabetes, Cushings syndrome, polycystic ovarian syndrome, and hypothyroidism.

Other causes include taking certain medications like steroids and could also occur in people with dark skin but no underlying medical conditions.


Depends on the cause hence investigations would be needed.

When do you get in touch with Sandsclinic?

If you are concerned about the condition as you might need further investigations.