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Dermatographism

Most common form of physical urticaria characterized by linear wheals and erythema appearing within minutes of skin friction or stroking.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Dermatoloji department. Book Appointment →

What is Dermatographism?

Dermatographism, also called dermographism urticaria or factitious urticaria, is the most common form of physical (inducible) urticaria. It is mediated by IgE-dependent and independent mast cell degranulation triggered by mechanical pressure or friction, releasing histamine and other inflammatory mediators that produce the classic triple response of Lewis (red flare, white reaction and wheal).

Two clinical forms are recognized: simple (asymptomatic, occurring in 2-5% of healthy individuals) and symptomatic (pruritic, requiring treatment in 1.5-5% of population). Onset is typically in young adulthood (mean age 30s) and may persist for years to decades. Severe forms can interfere with daily activities, sleep and quality of life.

Diagnosis is clinical, demonstrated by stroking the skin firmly with a tongue depressor or pen and observing wheal formation within 5-10 minutes lasting 15-30 minutes. FricTest with calibrated devices quantifies severity. Differential diagnosis includes mastocytosis, cholinergic urticaria and other physical urticarias. Treatment with second-generation H1-antihistamines at standard or up-to-fourfold doses is effective. Refractory cases may benefit from omalizumab, cyclosporine or H2-blocker addition.

Symptoms

Linear wheals appearing along scratched skin
Erythema and triple response of Lewis
Pruritus and burning sensation (symptomatic form)
Wheal onset within 5-10 minutes of pressure
Wheal duration 15-30 minutes typically
Triggers: scratching, tight clothing, towel drying
Symptom worsening with heat, exercise, stress
Asymptomatic form (no pruritus) most common

Risk Factors

Young adult age (peak 30-50 years)
Atopic background (atopic dermatitis, asthma)
Female sex (slightly higher prevalence)
Recent infection or stress as trigger
Drug-induced (penicillin, opiates)
Helicobacter pylori infection (controversial)
Thyroid autoimmunity
Other chronic urticaria types

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Persistent symptomatic skin writing >6 weeks
  • Significant pruritus affecting daily life or sleep
  • Failure of OTC antihistamine therapy
  • Associated symptoms (angioedema, anaphylaxis)
  • Suspected drug-induced cause
  • Family history of mastocytosis
  • Need for systemic therapy
  • Diagnostic confirmation with provocation test

Treatment Methods

01
Avoidance of triggers (tight clothing, vigorous scratching)
02
Cool compresses and lukewarm showers
03
Second-generation H1-antihistamines (cetirizine, loratadine, fexofenadine)
04
Up-to-fourfold dose escalation per EAACI/GA²LEN guidelines
05
Addition of H2-blocker (ranitidine, famotidine) in selected cases
06
Omalizumab 300 mg every 4 weeks for refractory disease
07
Cyclosporine 3-5 mg/kg/day as third-line
08
UVB phototherapy in selected cases

Which Department to Visit?

You can visit our Dermatoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Dermatoloji Department

Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.