What Could Cause The Accumulation Of Dead Skin Cells Like A Small Dark Bump On The Left Hand Thumb?

Posted on Tue, 13 Mar 2018

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Tue, 13 Mar 2018 Answered on

Tue, 19 Feb 2019 Last reviewed on

Question : Hi, i think i have a skin issue . Basically there is no problem but on my left hand thumb there is been accumulation of dead skin cell and look like a small dark bump.It doesn't pain or hurt on pressing or anything.I have tried to scrub it off many times but It doesnt work.It is not growing nor it is improving.It just there.Can you help? Attached left and right hand thumb pics to give you idea about the difference.

Answered by Dr. Dr. Kakkar (48 minutes later)

Brief Answer:
Knuckle pad

Detailed Answer:

Hello,

I have noted your concern and I have viewed the image. Yes, you have a knuckle pad. They usually form after repetitive trauma or friction. I suggest you to use a topical keratolytic preparation containing ingredients like salicylic acid and lactic acid, once every night. These are the same ingredients which are used to exfoliate warts e.g. Watnil lotion.

Hope I have answered your query.

Regards,
Dr. Kakkar S.
Dermatologist

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar