Physical urticaria: prevalence, type and natural course in a tropical country

Abstract

This study emphasized the variety of PU, other inducible urticarias and natural courses based on tertiary hospital care. PU and other inducible urticarias have tendency to have a longer course than chronic spontaneous urticaria.

Natural course and prognostic factors of chronic urticaria in Korean children: A single center experience

“…29 The presence of inducible factors and/or autoimmune antibodies have been considered poor prognostic factors in previous studies of patients with CU, although this is still controversial. 15,22,23 We found a trend for an association between the presence of inducible factors and remission without statistical significance in the multivariable analysis. A previous study found that symptom duration was longer in autoimmune urticaria, which was defined in that study as positive ASST, than CSU.…”

“…4,21 In our study, the male to female ratio was 1.3: 1, which is a higher male predominance than in other studies. 18,22 According to previous reports, 50-80% of CU patients have CSU, and only 25-40% of CU patients have inducible factors, of which physical urticaria is the most common. [22][23][24] In our study, 31.2% of the patients did not have any cause of urticaria, despite detailed history taking and several tests.…”

“…18,22 According to previous reports, 50-80% of CU patients have CSU, and only 25-40% of CU patients have inducible factors, of which physical urticaria is the most common. [22][23][24] In our study, 31.2% of the patients did not have any cause of urticaria, despite detailed history taking and several tests. The only cause of CIU was physical urticaria, and dermographism was the most common cause of physical urticaria, consistent with another domestic study that reported that 42.3% of CU patients have dermographism.…”

Physical urticaria: Review on classification, triggers and management with special focus on prevalence including a meta-analysis

“…Although avoidance of the physical triggers often provides adequate control of PU, studies suggest that PU is less likely to resolve over time compared to chronic spontaneous forms (16% after 1 year versus almost 50%) [45,46].…”

Chronic Inducible Urticaria Part I

“…Diphenhydramine 25-50 mg is helpful. Systemic steroids are used to prevent delayed biphasic reactions [20]. Any individual with the diagnosis of EIA should carry an epinephrine autoinjector [21].…”