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What is Koebner Phenomenon?

Nithya Venkat is a skin care enthusiast who loves to research and write about topics that involves all aspects of skin care.

Koebner's Phenomenon on the knuckles

Koebner's Phenomenon on the knuckles

Koebner Phenomenon is a skin condition that is characterized by plaque forming on injured areas of the skin. This condition aggravates the existing injury or forms new lesions on the injured area.

Koebner Phenomenon occurs in people who have been affected with Psoriasis. This phenomenon is named after a German Dermatologist Dr. Heinrich Koebner, who was the first to notice this skin condition.

Terms to Know to Understand Koebner Phenomenon

Skin Trauma - Any cuts, bruises, scratches, burns, tears, scrapes, or lacerations are referred to as skin trauma.

Psoriasis is a skin condition that is caused by the rapid multiplication of skin cells in a short time. The newly formed cells push their way to the surface of the skin. This results in the skin becoming flaky.

Lesion - A damaged area of the skin.

Plaque - Skin plaque is a lesion that is clearly visible and raised from the skin. It appears as a rough or smooth bump. The plaque can be white or red in color and can thicken to form a scab or crust.

Epidermis - Outermost layer of skin.

Dermis - The layer just below the outer layer of the skin.

Symptoms of Koebner Phenomenon

In Koebner Phenomenon, the following can happen to an injured area of the skin -

  • new lesions form on the area of the skin that is damaged
  • worsens the condition of the damaged skin

Causes of Koebner Phenomenon

When a person already has psoriasis, then the following can result in Koebner Phenomenon -

  • minor cuts
  • bruises
  • scratches
  • bug bites
  • poison oak
  • poison ivy
  • chemical burns
  • sunburns
  • Herpes blister
  • scabies
  • boils
  • dermatitis

Protein induced Koebner Phenomenon

A protein called Stat 3 is involved in healing a wound. Usually, after the wound is healed, the Stat 3 protein becomes inactive. In the case of the Koebner Phenomenon, the Stat 3 protein remains active and continues to produce more and more cells that result in thick patches of skin cells.

How to take care for Koebner Phenomenon skin condition

Koebner Phenomenon can be prevented by taking precautions and looking after your skin.

1. After a bath, gently pat your skin dry.

2. Apply a moisturizer to keep your skin hydrated.

3. Wear gloves when you work.

4. Avoid scratching or bruising your skin.

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5.Wear soft clothing that does not scratch or irritate your skin.

6. Try not to scratch your skin even if it itches.

7. If you get hurt, attend to it immediately.

8. Clean your nails to prevent fungal infection.



This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2013 Nithya Venkat


Nithya Venkat (author) from Dubai on April 26, 2013:

midget38 I hope my hub helps, thank you for stopping by.

Michelle Liew from Singapore on April 25, 2013:

My husband has this. I will forward it to him, Nithya!

Nithya Venkat (author) from Dubai on March 11, 2013:

teaches12345 thank you I hope your friend gets better soon.

Dianna Mendez on March 11, 2013:

I have a friend who suffers from this and I feel empathy for her. Very useful post and one that will help so many. Blessings.

Nithya Venkat (author) from Dubai on March 10, 2013:

tobusiness thank you and many people do not realize that they are suffering from Koebner Phenomenon because they do not know about it.

Jo Alexis-Hagues from Lincolnshire, U.K on March 10, 2013:

Vellur, this a comprehensive informative hub, there are many people suffering from such skin conditions and this will be most useful. great job.

Nithya Venkat (author) from Dubai on March 09, 2013:

DDE thank you for stopping by and leaving a comment. much appreciated.

Devika Primić from Dubrovnik, Croatia on March 09, 2013:

Informative and well put together on Koebner Phenomenon: Inducing Psoriasis with Skin Trauma. I didn't know much on this health information but now I do. You have said it all clear and to the point.

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