IRCT20221214056813N1 IRCT 2022-12-26 Ahvaz University of Medical Sciences Investigating the effect of drug therapy on laryngitis Comparison between manual therapy with combined manual therapy and drug therapy on voice characterizes of patients with muscle tension disorder 2023-01-13 anticipated 34 Complete https://irct.ir/trial/67406 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: To implement the simple random method, you can use the table of random numbers and consider even and odd numbers and assign each of the two treatments A (to determine the manual therapy group) and B (to determine the manual therapy and drug therapy group) to an even number and The person continued the process until each group reached 17 people, in this study, even and odd numbers were selected using R software and through the generation of random numbers using a uniform distribution in the interval (0,1), Blinding description: It should also be mentioned that the therapist and clients are unaware of the group therapy and the work is blind. In this way, the evaluator is not aware of the treatment groups (manual therapy and drug therapy are performed by another therapist). 3 Voice disorder. Intervention 1: Intervention group: the composition of echinopes medicinal plant for 30 days and twice a day in the amount of 10 mg, which will be made by the Faculty of Pharmacy of Jundi Shapur University of Ahvaz, and laryngeal massage for 10 sessions and twice a week by a speech therapist. Intervention 2: Control group: larynx manipulation for 10 sessions and twice a week by a speech therapist. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no plan for sharing these data