[Wilson's disease and psychiatry. Apropos of a case]

This work is based on the case of a 24 year old young man sent to a psychiatry department for behaviour troubles, hysterical demonstrations and a neurological syndrome atypical. The first part develops his familial and medical background, the clinical schemes and, finally, the biological elements leading to the Wilson's disease diagnosis. The second part is a clinical and biological summary. Comparing to our case, we can see that it is a relatively typical form. This work ends with the difficulty of determining such a diagnosis regarding a patient whose personal and familial background allowed for a consistent psychopathological explanation and who had been already treated in this sense, with the risk of neglecting the biological check up. But can this Wilson's disease diagnosis be enough to sum up all the psychiatric pathology of this patient? The question remains to be resolved in the absence of any future studies.