Table 2.
Comparison of clinical features and course of cholinergic urticaria demonstrated by our study and previous studies∗.
| Author (yr) (study design) | City (country) | Latitude | Climate zone | Average temperature in summer (°C) | Prevalence of CholU among all chronic urticaria cases (%) | No. (case) | Male (%) | Mean age at symptom onset (yr) | Atopy (%) | History of anaphylaxis (%) | Concomitant form of other urticaria | Mean disease duration# (yr) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tropical zone | ||||||||||||
| This study (2019) (retrospective study) | Bangkok (Thailand) | 13.7°N | Tropical | 35.4 | 0.7% | 16 | 56.3 | 28 | 18.8 | 0 | CSU 25% Dermographism 18.8% Cold urticaria 12.5% Cold urticaria and dermographism 6.3% |
4.3 |
| Sánchez et al.19 (2017) (prospective study) | Medellín | 6.3°N | Tropical | 28.5 | 2% | 5 | N/A | N/A | N/A | N/A | Dermographism 60% | 4 |
| Bogotá (Colombia) | 4.7°N | Subtropical | 20.2 | |||||||||
| Godse et al.6 (2013) (cross-sectional study by questionnaire survey) | Western India | 23.9°N | Tropical | 40 | 4.16% | 25 | 56 | N/A | N/A | 0 | CSU 8% | N/A |
|
| ||||||||||||
| Temperature zone | ||||||||||||
| Seo1 et al.8 (2019) (retrospective study) | Chuncheon (Korea) | 37.8°N | Temperate | 25.7 | 0.023% | 11,429 | 42 | N/A | N/A | N/A | N/A | N/A |
| Kim et al.9 (2014) (retrospective study) | Seoul (Korea) | 37.5°N | Temperate | 25.7 | N/A | 92 | 100 | 27.8 | 16.3 | 3 | Dermographism 6.5% Cold urticaria 3.3% Food-induced urticaria 2.2% |
4 |
| Zuberbier et al.7 (1994) (cross-sectional study by questionnaire survey) | Berlin (Germany) | 52.5°N | Temperate | 24 | 11.2% | 55 | 43.6 | N/A | 45.5% | 0 | N/A | N/A |
| Asady et al.2 (2017) (retrospective study) | Berlin (Germany) | 52.5°N | Temperate | 24 | N/A | 200 | 42 | 28.1 | 102 | N/A | Another form of chronic urticaria 37.5% (mostly CSU 24.5%) | 4.6 |
Abbreviations: CholU: cholinergic urticaria; CSU: chronic spontaneous urticaria; N/A: not available. ∗Excluding studies that did not provide adequate information. #Mean disease duration ranges from onset of symptom to disease remission (in case of remission).