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Dandy Walker (DW) malformation is a cerebelar malformation associated with multiple cognitive deficits, psychopathological alterations and motor disturbances. We present the case of a patient affected by this malformation who was referred to the child mental health unit. We conducted a review on the anatomy, epidemiology, clinical presentation, prognosis and comorbidity of this malformation as well as on the psychopathology associated with cerebelar pathology as a whole, including Shamahmann and Sherman's cognitive-affective cerebellar syndrome. Finally, we present the case description and establish the differential diagnosis from the patient's history, the mental state examination and complementary examinations (neuroimaging and neuropsychological tests). [ABSTRACT FROM AUTHOR]

Selective mutism was first described more than 100 years ago. It belongs to an heterogeneous group of conditions that share in common the presence of anomalies in social behavior starting during the developmental period. In DSM-5, it has been classified in the category of Anxiety Disorders. We present a clinical case of a patient that was referred to our child and adolescent Mental Health Unit due to a lack of speech in school and social contexts in spite of speaking with apparent normality in the presence of closest relatives, also accompanied by school failure. We present some of the general characteristics of the disorder: risk factors, diagnostic features according to the most important current classification systems and treatment strategies. We also describe the case, including clinical interviews, analysis of the information shared by the adoptive mother, exploration of the mental state, summary of neuropsychological explorations and school reports, and provide a final discussion. [ABSTRACT FROM AUTHOR]