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| Methods | RCT |
| Participants | 92 participants with refractory urticaria |
| Interventions | Montelukast combined with cetirizine, and control group with Tripterygium glycoside combined with cetirizine |
| Outcomes | Total symptoms scores were calculated for participants at baseline and at week 2 and week 4 during treatment based on individual scores for weal and pruritus; incidence of adverse events was recorded |
| Notes | Chinese language study awaiting translation |
