Suitable treatment options except for H1RA are still lacking for severe refractory CU.
Addition of lafutidine to H1RA treatment significantly improved urticarial symptoms in severe refractory CU.
The DLQI score was markedly improved after the addition of lafutidine to H1RA treatment in severe refractory CU.
No adverse events occurred after the addition of lafutidine in severe refractory CU.