Delayed pressure urticaria.

@article{Sussman1982DelayedPU,
  title={Delayed pressure urticaria.},
  author={Gordon L. Sussman and Richard P. Harvey and AlanL. Schocket},
  journal={The Journal of allergy and clinical immunology},
  year={1982},
  volume={70 5},
  pages={
          337-42
        }
}
Delayed pressure urticaria (DPU) is a poorly understood syndrome. We describe 17 patients with DPU. Chronic urticaria was present in 94%. All had negative challenges for immediate demographism and cold urticaria. DPU was induced with a pressure challenge on the shoulder of 15 pounds for 15 min. Average onset of pressure lesions after challenge was 6.5. Lesions were painful, not pruritic, peaked at 9 hr, and disappeared by 24 to 48 hr. Fever, chills, and/or arthralgias occurred in 78%. Positive… CONTINUE READING

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