Background
Patients with urticaria for more than 6 weeks are given the diagnosis of chronic urticaria. This distinction is important because an inciting event or etiology is not identified for the majority of patients with chronic urticaria, giving rise to the often-used term, chronic idiopathic urticaria (CIU). A proportion of patients with chronic urticaria have physical urticaria,[1] which is urticaria incited by a physical stimulus such as cold, vibration, or pressure. Also see Urticaria, Cholinergic; Urticaria, Contact Syndrome; Urticaria, Dermographism; and Urticaria, Solar.
Pressure urticaria is an uncommon form of physical urticaria. Pressure urticaria may occur immediately (within minutes) after a pressure stimulus[2] ; however, more commonly, pressure urticaria develops after a delay of 4-6 hours after a pressure stimulus; hence, the designation delayed pressure urticaria (DPU) is used. The wheals may last for 8-72 hours. The hands, feet, trunk, buttocks, legs, and face are the most common areas affected. Lesions can be induced by a variety of stimuli, including standing, walking, wearing of tight clothes, or sitting on a hard surface.[3]
Pathophysiology
The pathogenesis of delayed pressure urticaria is unknown. No allergen can usually be identified. Mast cells and histamine release are believed to play roles because the injection of compound 48/80, which causes depletion of mast cell mediators, prevents the induction of lesions in the injected area.[4] Histamine levels are increased in lesional skin, and intracellular histamine levels are decreased in peripheral white blood cells.[5] Despite these findings and the finding of increased stimulated histamine release, histamine is not likely to be the sole mediator in pressure urticaria, given the relative unresponsiveness of the condition to antihistamine treatment.
Other possible mediators include eosinophils, given the elevated numbers of eosinophils, eosinophil cationic protein (ECP), and eosinophil cationic factor (ECF) found in biopsy specimens from some patients with delayed pressure urticaria, particularly bullous delayed pressure urticaria.[6] Elevated concentrations of interleukins 5 and 6 and leukotrienes have also been found in lesional skin of pressure urticaria patients.[7, 8] Abnormalities in platelets and fibrin/fibrinolysis are also being investigated.[9, 10]
Epidemiology
Frequency
United States
Delayed pressure urticaria is considered a rare entity. Some investigators suggest that delayed pressure urticaria is more prevalent but is not consistently recognized. One study of 2310 patients with urticaria, seen over 32 years, found the prevalence of delayed pressure urticaria to be 2%.[11]
Mortality/Morbidity
Depending on the severity of the disease and the associated symptoms, delayed pressure urticaria can be disabling, especially in patients who perform manual labor. Delayed pressure urticaria is a chronic disease, with a mean duration of 9 years (range, 1-40 y).[12] The morbidity of delayed pressure urticaria varies, depending on the severity and the response to treatment.
Quality-of-life (QOL) tools have demonstrated an impairment in QOL scores similar to patients with cardiac disease or chronic dermatoses such as psoriasis and atopic eczema. QOL scores were lowest for energy, social isolation, emotional reaction, and sleep disturbance. The dimension of daily living activities was more profoundly impaired in patients with chronic idiopathic urticaria than in those with atopic eczema or psoriasis.[13]
Sex
Delayed pressure urticaria is slightly more common in men than in women.
Age
The peak age of onset of delayed pressure urticaria is in the 20s and 30s (range, 5-63 y).[12]
Barlow RJ, Warburton F, Watson K, Black AK, Greaves MW. Diagnosis and incidence of delayed pressure urticaria in patients with chronic urticaria. J Am Acad Dermatol. Dec 1993;29(6):954-8. [Medline].
Commins SP, Kaplan AP. Immediate pressure urticaria. Allergy. Jan 2002;57(1):56-7. [Medline].
Lawlor F, Black AK. Delayed pressure urticaria. Immunol Allergy Clin North Am. May 2004;24(2):247-58, vi-vii. [Medline].
Ryan TJ, Shim-Young N, Turk JL. Delayed pressure urticaria. Br J Dermatol. Aug 1968;80(8):485-90. [Medline].
Kaplan AP, Horakova Z, Katz SI. Assessment of tissue fluid histamine levels in patients with urticaria. J Allergy Clin Immunol. Jun 1978;61(6):350-4. [Medline].
Kerstan A, Rose C, Simon D, et al. Bullous delayed pressure urticaria: pathogenic role for eosinophilic granulocytes?. Br J Dermatol. Aug 2005;153(2):435-9. [Medline].
Lawlor F, Bird C, Camp RD, et al. Increased interleukin 6, but reduced interleukin 1, in delayed pressure urticaria. Br J Dermatol. May 1993;128(5):500-3. [Medline].
Di Lorenzo G, Pacor ML, Mansueto P, et al. Is there a role for antileukotrienes in urticaria?. Clin Exp Dermatol. Mar 2006;31(3):327-34.
Kasperska-Zajac A, Brzoza Z, Rogala B. Increased concentration of platelet-derived chemokines in serum of patients with delayed pressure urticaria. Eur Cytokine Netw. Jun 2008;19(2):89-91. [Medline].
Kasperska-Zajac A, Jasinska T. Analysis of plasma D-dimer concentration in patients with delayed pressure urticaria. J Eur Acad Dermatol Venereol. Feb 2011;25(2):232-4. [Medline].
Champion RH. Urticaria: then and now. Br J Dermatol. Oct 1988;119(4):427-36. [Medline].
Dover JS, Black AK, Ward AM, Greaves MW. Delayed pressure urticaria. Clinical features, laboratory investigations, and response to therapy of 44 patients. J Am Acad Dermatol. Jun 1988;18(6):1289-98. [Medline].
Grob JJ, Gaudy-Marqueste C. Urticaria and quality of life. Clin Rev Allergy Immunol. Feb 2006;30(1):47-51. [Medline].
Morioke S, Takahagi S, Iwamoto K, Shindo H, Mihara S, Kameyoshi Y. Pressure challenge test and histopathological inspections for 17 Japanese cases with clinically diagnosed delayed pressure urticaria. Arch Dermatol Res. Oct 2010;302(8):613-7. [Medline].
Czecior E, Grzanka A, Kurak J, Misiolek M, Kasperska-Zajac A. Late Dysphagia and Dyspnea as Complications of Esophagogastroduodenoscopy in Delayed Pressure Urticaria: Case Report. Dysphagia. Jun 5 2011;[Medline].
Barlow RJ, Ross EL, MacDonald D, Black AK, Greaves MW. Adhesion molecule expression and the inflammatory cell infiltrate in delayed pressure urticaria. Br J Dermatol. Sep 1994;131(3):341-7. [Medline].
Barlow RJ, Ross EL, MacDonald DM, Kobza Black A, Greaves MW. Mast cells and T lymphocytes in chronic urticaria. Clin Exp Allergy. Apr 1995;25(4):317-22. [Medline].
Magerl M, Borzova E, Giménez-Arnau A, Grattan CE, Lawlor F, Mathelier-Fusade P. The definition and diagnostic testing of physical and cholinergic urticarias--EAACI/GA2LEN/EDF/UNEV consensus panel recommendations. Allergy. Dec 2009;64(12):1715-21. [Medline].
Zuberbier T, Bindslev-Jensen C, Canonica W, et al. EAACI/GA2LEN/EDF guideline: management of urticaria. Allergy. Mar 2006;61(3):321-31. [Medline].
Lawlor F, Black AK, Ward AM, Morris R, Greaves MW. Delayed pressure urticaria, objective evaluation of a variable disease using a dermographometer and assessment of treatment using colchicine. Br J Dermatol. Mar 1989;120(3):403-8. [Medline].
Liu RH, Werth VP. What is new in the treatment of steroid-induced osteoporosis?. Semin Cutan Med Surg. Dec 2007;26(4):203-9. [Medline].
Hartmann K, Hani N, Hinrichs R, Hunzelmann N, Scharffetter-Kochanek K. Successful sulfasalazine treatment of severe chronic idiopathic urticaria associated with pressure urticaria. Acta Derm Venereol. Jan-Feb 2001;81(1):71. [Medline].
Kozel MM, Sabroe RA. Chronic urticaria: aetiology, management and current and future treatment options. Drugs. 2004;64(22):2515-36. [Medline].
Kulthanan K, Thumpimukvatana N. Positive impact of chloroquine on delayed pressure urticaria. J Drugs Dermatol. Apr 2007;6(4):445-6. [Medline].
Dawn G, Urcelay M, Ah-Weng A, O'Neill SM, Douglas WS. Effect of high-dose intravenous immunoglobulin in delayed pressure urticaria. Br J Dermatol. Oct 2003;149(4):836-40. [Medline].
Metz M, Altrichter S, Ardelean E, Kessler B, Krause K, Magerl M, et al. Anti-immunoglobulin E treatment of patients with recalcitrant physical urticaria. Int Arch Allergy Immunol. 2011;154:177-80.
Mitzel-Kaoukhov H, Staubach P, Müller-Brenne T. Effect of high-dose intravenous immunoglobulin treatment in therapy-resistant chronic spontaneous urticaria. Ann Allergy Asthma Immunol. Mar 2010;104(3):253-8. [Medline].
Nettis E, Colanardi MC, Soccio AL, Ferrannini A, Vacca A. Desloratadine in combination with montelukast suppresses the dermographometer challenge test papule, and is effective in the treatment of delayed pressure urticaria: a randomized, double-blind, placebo-controlled study. Br J Dermatol. Dec 2006;155(6):1279-82. [Medline].
Vena GA, Cassano N, D'Argento V, Milani M. Clobetasol propionate 0.05% in a novel foam formulation is safe and effective in the short-term treatment of patients with delayed pressure urticaria: a randomized, double-blind, placebo-controlled trial. Br J Dermatol. Feb 2006;154(2):353-6. [Medline].
| Score | Wheals | Pruritus |
| 0 | None | None |
| 1 | Mild (< 20 wheals/24 h) | Mild |
| 2 | Moderate (21-50 wheals/24 h) | Moderate |
| 3 | Intense (>50 wheals/24 h) or large confluent areas | Intense |
| *Score = wheal score (0-3) + pruritus score (0-3); score range is 0-6. | ||

