This article describes the symptoms and causes of dermatographism.

It also explains how the condition is diagnosed and treated.

Dermatographism Symptoms

The symptoms of dermatographism can vary.

Dermatographia allergy on skin

atsawin1002 / iStock / Getty Images

In simple dermatographism, people notice swelling and/or redness (erythema) where the skin has been stroked.

Some people may contend with only minor and short-lasting hives (urticaria).

Otherwise, dermatographism usually clears on its own without treatment within 15 to 30 minutes.

Image of arm with dermatographism

Reproduced with permission from ©DermNet NZ and © Dr Mashihul Hossainwww.dermnetnz.org2022

It rarely leaves any lasting marks on the skin.

Urticaria can also be resulting from environmental and health triggers, some of which may co-exist with dermatographism.

Examples include:

Diagnosis

Dermatographism is typically diagnosed by the appearance of the rash under mechanical stress.

These marks look like dermatographic urticaria but have different underlying mechanisms.

Treatment

Dermatographism usually does not need to be treated unless it is causing severe or prolonged symptoms.

A high-dose antihistamine may be needed to control symptoms.

Moisturize Regularly

Good daily skin care can prevent the development of dermatographic hives.

Dermatographism rarely requires treatment, but you’re free to take proactive steps to avoid causing a rash.

A Word From Verywell

Dermatographism can be annoying, but it’s usually not severe.

However, if your symptoms are difficult to control, don’t hesitate to see a dermatologist.

Frequently Asked Questions

No.

It’s a skin conditionand a common one at that.

It is a sign that the skin is sensitive to touch or pressure.

Usually, a rash brought on by allergy will be itchier and last longer than a dermatographic rash.

Dermatographic hives usually go away on their own within 30 minutes.

In the meantime, make a run at avoid scratching the area if it is itchy.

This can cause more hives to appear.

American Osteopathic College of Dermatology.Your daily do’s of dermatology-Dermatographism.

Nobles T, Muse ME, Schmieder GJ.Dermatographism.

U.S. Department of the Interior.The water in you: Water and the human body.