Introduction: One of the most common and complete ways to communication between humans is “Speech”. Speech has lots of complicates in both acquisition and performing steps. Therefore it is at risk of many disorders. One of these disorders is stuttering. Stuttering is a syndrome in that there are interruptions in fluency of speech like repetition, block, prolongation, pause, etc. Many factors affect on stuttering. One of these factors which are mentioned in many references, are allergies. About 15% of communities suffer from allergy. In this study, the main goal is to investigation of the relationship between stuttering and various kinds of allergies, including asthma, rhinitis, and dermatitis. Materials and Methods: In this study 33 stutterer cases referred to speech therapy clinics as the “case group” and 57 non-stutterer individuals as matched control group have selected. The checklist for investigation the allergy was applied by both case and control groups and was analyzed.

Results: In the case group 9 out of 33 stutterers, had asthma (27.3%) and in the control group 6 out of 57 non-stutterers were involved by asthma (10.5%) and in case group 6 out of 33 stutterers had rhinitis (18.2%) and in control group 6 persons had rhinitis (L O. 5%) and 1 out of 33 stutterer in case group had dermatitis (3%) and 4 persons in control group had it (7%).

Conclusion: Results of this research showed there is a significant relationship between stuttering and asthma but there is no significant relationship between the other two kinds of allergies-rhinitis and dermatitis and stuttering.