Objective To investigate the difference in the efficacy between clonidine transdermal patch and haloperidol tablets in the treatment of moderate to severe tic disorders in children.Methods A total of 134 children with moderate to severe tic disorders were randomly divided into clonidine group(n=70) and haloperidol group(n=64).The clonidine and haloperidol groups were treated with clonidine transdermal patch and haloperidol tablets respectively,and the treatment lasted for 8 weeks in both groups.The Yale Glo...