The Sinthomatic thread in autism process

Based on Jacques Lacan’s psychoanalytic theory, this article addresses the subjective impasses established in the process of subjective constitution of a child in psychoanalytical treatment in process of an autistic resolution and their attempts to know-how to do with language in that process. I start from the following question: what is the function of the child’s insistent language in a speech not suitable for their communication? My hypothesis is that the child takes language as an attempt to know-how with their symptom giving it a status of sinthome; a sinthomatic thread as a way in which the subject in constitution answers the imperative of the real. I discuss the issue of psychological diagnosis and its relation to the constitution of the subject and the psychic structure not set in childhood. I emphasize the double causation of the subject and explore the Borromean logic in autism from this child’s speech and language