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Figure c42/f001
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 c42/f005
Figure 42.5
Dermographism, meaning ‘skin writing’. (Courtesy of St John's Institute of Dermatology, London, UK.)
Figure c42/f009
Figure 42.9
Solar urticaria.
Figure c42/f002
Figure 42.2
Angio‐oedema of the eyelid. (Courtesy of St John's Institute of Dermatology, London, UK.)
Figure c42/f006
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 c42/f010
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 c42/f003
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 c42/f007
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 c42/f011
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 c42/f004
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 c42/f008
Figure 42.8
Close‐up of small monomorphic lesions of cholinergic urticaria on the trunk. (Courtesy of Norfolk and Norwich University Hospital, UK.)
Figure c42/f012
Figure 42.12
Management algorithm of chronic urticarial. NSAIDs, non‐steroidal anti‐inflammatory drugs.