Dermatographia, also known as skin writing, is a skin condition characterized by the skin becoming raised and inflamed when it is scratched, rubbed, or otherwise agitated. The condition occurs when the cells in the skin release histamine, causing the area to become inflamed and itchy.

Symptoms of dermatographia can include:

• Raised, red lines or welts on the skin after it has been scratched or rubbed
• Itching or burning sensation in the affected area
• Swelling in the affected area

The exact cause of dermatographia is not known, but it is thought to be related to an overreaction of the immune system to stimuli. The condition is generally harmless and does not require treatment, as the symptoms tend to resolve on their own within a short period of time. However, antihistamines or other medications may be recommended in more severe cases to reduce symptoms.

If you experience symptoms of dermatographia or are concerned about changes in your skin, it is important to consult with a healthcare professional or dermatologist for an accurate diagnosis and appropriate treatment plan.

The exact cause of dermatographia isn't clear. It may be caused by an allergic response, yet no specific allergen has been identified.

Simple things can trigger symptoms of dermatographia. For example, rubbing from your clothes or bedsheets may irritate your skin. Sometimes, dermatographia is preceded by an infection, emotional upset or medications, such as penicillin.

To reduce discomfort and prevent the symptoms of dermatographia, try these tips:

• Avoid irritating your skin. Refrain from using harsh soaps on your skin. Don't wear clothing made of itchy material, such as wool. Hot showers or baths may worsen the symptoms.
• Don't scratch your skin. If you have dermatographia or other skin conditions that may cause frequent itching, try to avoid scratching your skin. Scratching will aggravate the condition.
• Keep your skin moisturized. Dry skin tends to make skin itchy. Keep your skin moisturized by using lotions and creams after bathing.

Symptoms of dermatographia usually go away on their own, and treatment for dermatographia generally isn't necessary. However, if the condition is severe or bothersome, your doctor may recommend antihistamine medications such as diphenhydramine (Benadryl), fexofenadine (Allegra) or cetirizine (Zyrtec).