The “muteness” it is a condition in which a person does not speak or have difficulty speaking despite being able to do that. Can be caused by various factors, including anxiety disorder, the psychological traumas, disorders of language or physical disabilities. The selective mutism is a form of mutism in which the person does not speak in some specific social situations, but you can talk in the other. Mutism can be temporary or permanent, and can have a significant impact on quality of life and social relationships of the person. The treatment of mutism may include speech-language therapy, behavior therapy and pharmacotherapy, depending on the underlying cause.