Dermatographia
Dermatographia causes raised, itchy lines after the skin is scratched or rubbed. It is usually harmless, and individual marks often fade within about half an hour.
Also known as Dermatographism; skin writing
Overview
Dermatographia causes raised, itchy lines after the skin is scratched or rubbed. It is usually harmless, and individual marks often fade within about half an hour.
Types
Symptoms
Scratching or friction can produce redness, raised welts, swelling and itching within minutes.
Causes & risk factors
The precise cause is unclear. Friction, emotional stress, temperature changes, infections or certain medicines may trigger symptoms.
Frequently asked questions
Last reviewed
Diagnosis
A clinician gently strokes or presses the skin and observes whether a characteristic raised line develops.
Treatment
Many people need no treatment. If itching is troublesome, a clinician may recommend an oral antihistamine.
Prevention
Gentle skin care, moisturising and avoiding known sources of scratching or friction may reduce irritation.
Doctors & departments
Specialists and departments who diagnose and treat this condition.
Find a specialistCare at Wattanavipa
Consultations, tests and most treatments are available at Wattanavipa, with follow-up visits to adjust treatment as needed.
Have a question about your health?
Talk to a Vejthani specialist or book a visit at Wattanavipa.