Exact definition of CIU/CSU differs between published guidelines,1,2 but the key defining features are, a) no external physical triggers (non-inducible); and daily or episodic symptoms for >6 weeks.1,2 The European Academy of Allergy and Clinical Immunology/ Global Allergy and Asthma European Network/ European Dermatology Foundation/World Allergy Organization (EAACI/ GA(2) LEN/ EDF/ WAO) guidelines classify chronic urticaria into chronic inducible urticaria (dermatographic
, cold by contact, delayed pressure, heat by contact, solar, aquagenic, cholinergic, contact, and vibratory) and chronic spontaneous urticaria (CSU), previously called chronic idiopathic urticaria.
An association has been found between distribution of finger print (Dermatographic
) pattern and blood groups.
fixed drug eruption: another cause of pseudo-Darier's sign.
A clinician in Ada, Ohio, where I attended college as a creative writing student, named the disease early on: dermatographic urticaria.
Dermatographic urticaria is an autoimmune disorder caused by weakened membranes of mast cells in the skin.
WHEN I THINK of having dermatographic urticaria, I ultimately think of the irony inherent in my own condition: I was a young writer afflicted with a disease whose name means "skin writing." My body was mistaking my skin for living parchment, penning the narrative of my environment as I might write on paper.
Sarah, 17, from Woolton, is among 5% of the population who suffers from skin disorder dermatographic
urticaria, commonly known as skin writing.
The patient was given a scratch test, and she proved to be highly dermatographic. Dr.
The patient proved to be dermatographic on scratch testing, which prompted Dr.
This patient was not dermatographic on scratch testing, but the pattern of exacerbation following intercourse or wearing pants was highly suggestive of a physical urticaria.