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Figure 42.1
(a–d) Different morphology of urticarial weals. (Courtesy of Addenbrooke's Hospital, Cambridge, UK (a); courtesy of St John's Institute of Dermatolog...
Figure 42.5
Dermographism, meaning ‘skin writing’. (Courtesy of St John's Institute of Dermatology, London, UK.)
Figure 42.9
Solar urticaria.
Figure 42.2
Angio‐oedema of the eyelid. (Courtesy of St John's Institute of Dermatology, London, UK.)
Figure 42.6
Extensive delayed pressure urticaria over the back after sitting against a hard surface. Induced delayed dermographism is also seen on the upper back....
Figure 42.10
Aquagenic urticaria on the back after swimming, showing a few small papular weals surrounded by wide flares. (Courtesy of Norfolk and Norwich Univers...
Figure 42.3
Immunological and non‐immunological mast cell degranulation stimuli. The mast cell responds with degranulation to non‐immunological as well as immunol...
Figure 42.7
Wealing following application of a melting ice‐pack for 20 min. (Courtesy of St John's Institute of Dermatology, London, UK.)
Figure 42.11
The natural history of urticaria in 554 hospital patients. The expected percentage of patients with active urticaria, with 95% confidence limits, by t...
Figure 42.4
Histology of a spontaneous weal from a patient with chronic spontaneous urticaria showing dermal oedema with a moderate perivascular and interstitial ...
Figure 42.8
Close‐up of small monomorphic lesions of cholinergic urticaria on the trunk. (Courtesy of Norfolk and Norwich University Hospital, UK.)
Figure 42.12
Management algorithm of chronic urticarial. NSAIDs, non‐steroidal anti‐inflammatory drugs.