Corn Quiz

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Scott Nass

Scott Nass, MD, MPA, FAAFP, AAHIVS (GP / Family doctor)

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Learn more about Corn

Content updated on Nov 2, 2022

What is corn?

More commonly known as a corn, this is a condition where there is thickened and hardened skin over a specific area (frequently the foot) as a result of chronic pressure.

Symptoms of corn

  • Area of skin that is rough and hard

  • Skin hardening

  • Skin problem on the feet, beyond the ankle

  • Lumps under the skin

Questions your doctor may ask to check for corn

Your doctor may ask these questions to diagnose corn

  • Do you have chapped or rough skin?

  • Do you have hardening of the skin?

  • Do your symptoms on your foot affect the skin past the ankle area?

  • Do you feel a lump/lumps under your skin?

Treatment for corn

Corn plasters or a simple procedure can remove the hard center. However, lifestyle changes like switching to a well-fitting shoe are needed, to prevent the corns from coming back.

View the symptoms of Corn


  • Strode JE. A satisfactory operation for interdigital soft corns (clavus molle). Am J Surg. 1970 Mar;119(3):353. doi: 10.1016/0002-9610(70)90068-1. PMID: 5443941.

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Shohei Harase

Shohei Harase, MD


Kameda Medical Center, Japan

Yu Shirai

Yu Shirai, MD


Yotsuya Yui Clinic, Japan

Yoshinori Abe

Yoshinori Abe, MD

Internal medicine

Co-founder of Ubie, Inc.

Rohini R

Rohini R, MD

Ear, nose, throat (ENT)

Bayshore Health Centre, India

Seiji Kanazawa

Seiji Kanazawa, MD, PHD

Obstetrics and gynecology (OBGYN)

National Center for Child Health and Development, Japan

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