Abstract
Background: The diagnosis of typical cold urticaria (ColdU) relies on whealing in response to local cold stimulation testing (CST). It can also manifest with cold-induced anaphylaxis (ColdA). Till date, it is largely unclear how often patients with ColdU receive adrenaline treatment and are provided with an adrenaline autoinjector (AAI). Methods: An international, cross-sectional study, COLD-CE (i.e., comprehensive evaluation of ColdU and other cold-induced reactions), was carried out at 32 UCAREs. Detailed histories were taken and CST with an ice cube and/or TempTest® performed. ColdA was defined as an acute cold-induced (i.e., by cold water, air, or surfaces) involvement of the skin and/or visible mucosal tissue and at least one of the symptoms (cardiovascular manifestations, difficulty breathing, or gastrointestinal symptoms). Results: Of the 551 ColdU patients, 75% (n = 412) had a positive CST. Of them, concomitant chronic spontaneous urticaria was diagnosed in 10%. Of 372 patients with stand-alone ColdU, 69% were women and 91% adults. Their median age was 36 (IQR 26 − 48) years. Patients were also categorized into residents of countries with a tropical (n = 33), temperate (n = 264), or cold (n = 75) climate (Table 1: R13C1, R17C1, R21C1). AAI was more often prescribed to residents of temperate than tropical countries (30% vs. 12%, p = .038; Table 1: R31C1), although the frequency of ColdA did not significantly differ between these countries (44% vs. 42%, p = 1.000; R29C2). Residents of tropical countries had a higher frequency of ColdA induced by cold air than residents of temperate (36% vs. 12%, p = .001; R29C4) or cold (36% vs. 12%, p = .007; R25C4) countries. Cardiovascular manifestations induced by cold air were diagnosed in 33% (n = 11) of residents of tropical countries, but only 18% (n = 2) and 36% (n = 4) of them had received adrenaline and AAI, respectively (R13 − 15C7). Furthermore, hypotension and/or loss of consciousness induced by cold air occurred in 18% (n = 6) of patients, but only 17% (n = 1) received adrenaline (R13 − 14C10). ColdA was induced by complete cold water immersion in 9% (n = 3) of patients, and none of them received adrenaline treatment nor AAI (R13 − 15C3). Conclusion: Our findings suggest that ColdA is undertreated and call for changes in ColdU management.
Keywords: Keyword: AAI, ColdU, ColdA
Table 1.
C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | C9 | C10 | ||
ColdU | ColdA – broad definition | Cardiovascular manifestations | Hypotension and/or loss of consciousness | ||||||||
Anya | CWI | Air | Anya | CWI | Air | Anya | CWI | Air | |||
R1 | Mixed adult/pediatric | N=372 | 145 (39%) | 107 (29%) | 53 (14%) | 116 (31%) | 88 (24%) | 31 (8%) | 48 (13%) | 41 (11%) | 10 (3%) |
R2 | Adrenaline receivedb | 12 (3%) | 12 (8%) | 8 (8%) | 4 (8%) | 11 (10%) | 7 (8%) | 4 (13%) | 8 (17%) | 5 (12%) | 3 (30%) |
R3 | AAI prescribedb | 93 (25%) | 54 (37%) | 44 (41%) | 15 (28%) | 49 (42%) | 41 (47%) | 9 (29%) | 24 (50%) | 21 (51%) | 4 (40%) |
R4 | Bothc | 8 (2%) | 8 (6%) | 5 (5%) | 3 (6%) | 7 (6%) | 4 (5%) | 3 (10%) | 5 (10%) | 3 (7%) | 2 (20%) |
R5 | Adult (≥18 years) | N=338 | 135 (40%) | 98 (29%) | 51 (15%) | 106 (31%) | 79 (23%) | 29 (9%) | 41 (12%) | 35 (10%) | 9 (3%) |
R6 | Adrenaline receivedb | 10 (3%) | 10 (7%) | 7 (7%) | 3 (6%) | 9 (9%) | 6 (8%) | 3 (10%) | 6 (15%) | 4 (11%) | 2 (22%) |
R7 | AAI prescribedb | 85 (25%) | 51 (38%) | 42 (43%) | 14 (28%) | 46 (43%) | 39 (49%) | 8 (28%) | 22 (54%) | 20 (57%) | 3 (33%) |
R8 | Bothc | 7 (2%) | 7 (5%) | 5 (5%) | 2 (4%) | 6 (6%) | 4 (5%) | 2 (7%) | 4 (10%) | 3 (9%) | 1 (11%) |
R9 | Pediatric | N=34 | 10 (29%) | 9 (27%) | 2 (6%) | 10 (29%) | 9 (27%) | 2 (6%) | 7 (21%) | 6 (18%) | 1 (3%) |
R10 | Adrenaline receivedb | 2 (6%) | 2 (20%) | 1 (11%) | 1 (50%) | 2 (20%) | 1 (11%) | 1 (50%) | 2 (29%) | 1 (17%) | 1 (100%) |
R11 | AAI prescribedb | 8 (24%) | 3 (30%) | 2 (22%) | 1 (50%) | 3 (30%) | 2 (22%) | 1 (50%) | 2 (29%) | 1 (17%) | 1 (100%) |
R12 | Bothc | 1 (3%) | 1 (10%) | 0 | 1 (50%) | 1 (10%) | 0 | 1 (50%) | 1 (14%) | 0 | 1 (100%) |
R13 | Tropical climate | N=33 | 14 (42%) | 3 (9%) | 12 (36%) | 12 (36%) | 1 (3%) | 11 (33%) | 7 (21%) | 3 (9%) | 6 (18%) |
R14 | Adrenaline receivedb | 2 (6%) | 2 (14%) | 0 | 2 (17%) | 2 (17%) | 0 | 2 (18%) | 1 (14%) | 0 | 1 (17%) |
R15 | AAI prescribedb | 4 (12%) | 4 (29%) | 0 | 4 (33%) | 4 (33%) | 0 | 4 (36%) | 3 (43%) | 1 (33%) | 3 (50%) |
R16 | Bothc | 2 (6%) | 2 (14%) | 0 | 2 (17%) | 2 (17%) | 0 | 2 (18%) | 1 (14%) | 0 | 1 (17%) |
R17 | Temperate climate | N=264 | 115 (44%) | 94 (36%) | 32 (12%) | 95 (36%) | 80 (30%) | 18 (7%) | 38 (14%) | 35 (13%) | 3 (1%) |
R18 | Adrenaline receivedb | 10 (4%) | 10 (9%) | 8 (9%) | 2 (6%) | 9 (10%) | 7 (9%) | 2 (11%) | 7 (18%) | 5 (14%) | 2 (67%) |
R19 | AAI prescribedb | 78 (30%) | 46 (40%) | 41 (44%) | 10 (31%) | 42 (44%) | 38 (48%) | 5 (28%) | 20 (53%) | 19 (54%) | 1 (33%) |
R20 | Bothc | 6 (2%) | 6 (5%) | 5 (5%) | 1 (3%) | 5 (5%) | 4 (5%) | 1 (6%) | 4 (11%) | 3 (9%) | 1 (33%) |
R21 | Cold climate | N=75 | 16 (21%) | 10 (13%) | 9 (12%) | 9 (12%) | 7 (9%) | 2 (3%) | 3 (4%) | 3 (4%) | 1 (1%) |
R22 | Adrenaline receivedb | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
R23 | AAI prescribedb | 11 (15%) | 4 (25%) | 3 (30%) | 1 (11%) | 3 (33%) | 3 (43%) | 0 | 1 (33%) | 1 (33%) | 0 |
R24 | Bothc | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
R25 | Tropical vs. cold (p-value) | .035 | .750 | .007 | .007 | .430 | <.001 | .009 | .367 | .003 | |
R26 | Adrenaline receivedb | .091 | .209 | NA | .486 | .486 | NA | 1.000 | 1.000 | NA | 1.000 |
R27 | AAI prescribedb | 1.000 | 1.000 | .528 | .338 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
R28 | Bothc | .091 | .209 | NA | .486 | .486 | NA | 1.000 | 1.000 | NA | 1.000 |
R29 | Tropical vs. temperate (p-value) | 1.000 | .001 | .001 | 1.000 | <.001 | <.001 | .306 | .781 | <.001 | |
R30 | Adrenaline receivedb | .630 | .619 | 1.000 | .297 | .357 | 1.000 | .622 | 1.000 | 1.000 | .226 |
R31 | AAI prescribedb | .038 | .564 | .260 | 1.000 | .549 | 1.000 | .694 | .699 | .595 | 1.000 |
R32 | Bothc | .219 | .210 | 1.000 | .176 | .176 | 1.000 | .539 | 1.000 | 1.000 | 1.000 |
R33 | Temperate vs. cold (p-value) | <.001 | <.001 | 1.000 | <.001 | <.001 | .267 | .015 | .023 | 1.000 | |
R34 | Adrenaline receivedb | .125 | .610 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
R35 | AAI prescribedb | .011 | .286 | .512 | .401 | .729 | 1.000 | 1.000 | .606 | .595 | 1.000 |
R36 | Bothc | .345 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
Note: Data are given as no. (%). Statistical significance of differences between patient groups was calculated using Fisher's exact test. Statistically significant p-values (p < .05) are in bold.
Abbreviations: AAI, adrenaline autoinjector; C, column; ColdA, cold-induced anaphylaxis; CWI, complete cold water immersion; N, number of patients; NA, not applicable (ie, no statistics are computed because at least one of the variables is a constant); R, row.
aAny cold trigger (i.e., complete cold water immersion, cold ambient air exposure, transition from cold outdoors to warm indoors, localized contact with cold liquids without immersion or ice, and contact with cold surfaces).
bUnknown indication(s).
cAdrenaline received & AAI prescribed.
References
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