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What Is The Cause Of Black Knuckles?
I was studying in my college library. The backs of my hands and finger tips turned black/gray. I am caucasian. You could see the black in the creases of my nuckles. I had no other symptoms and no difficulties. This lasted for 6-7 hours. When I awakened the next morning, it was fully gone.
posted on
Fri, 14 Mar 2014
Medically reviewed by
Ask A Doctor - 24x7 Medical Review Team
Mon, 5 Oct 2020
Answered on
Mon, 12 Oct 2020
Last reviewed on
Hi,
It maybe related to different things such as : Acanthosis nigricans, Vitamin B-12 deficiency, Drug reactions, Dermatomyositis, Addison’s disease, Scleroderma, Polycystic ovary syndrome or Autoimmune disorders. If your knuckles become darker and you don’t know why, it’s a good idea to follow up with your doctor.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Sam Salahia, Dermatologist
It maybe related to different things such as : Acanthosis nigricans, Vitamin B-12 deficiency, Drug reactions, Dermatomyositis, Addison’s disease, Scleroderma, Polycystic ovary syndrome or Autoimmune disorders. If your knuckles become darker and you don’t know why, it’s a good idea to follow up with your doctor.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Sam Salahia, Dermatologist
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