Relapse of CSU
The average follow-up time was 8.1 years (range 0.3-15.1). During this
period, 24 patients (9.6%) had a relapse of CSU. Most (17 patients,
70.8%) were adolescents (p< 0.05, RR= 2.55). No relapses were
documented in the youngest age group (0-3 years) (Table 1).