Sensory processing is the individual's ability to receive, process and integrate sensory information from the environment and body movement in the central nervous system, in order to produce adaptive responses. Sensory processing disorders (SPD) are associated to difficulties in regulating emotions and behaviours as well as motor abilities in response to sensory stimulation that lead to impairment in development and functioning. It is estimated that SPD affect 5–16% of school-aged children. Although these diseases constitute a primary diagnostic category in the Diagnostic Classification of Mental Health and Development Disorders of Infancy and Early Childhood: DC0-3, they have not yet been validated by the Diagnostic and Statistical Manual of Mental Disorders-DSM. In the latest edition of DSM, SPD were only included as one of the diagnostic criteria of autism-spectrum disorders. However, several studies have suggested that SPD may present themselves solely or coexist with other clinical conditions.

The aim of this study was to review systematically the relationship between SPD and psychopathology.

Articles indexed in the Pubmed database were analyzed.

Although sensory processing problems are well known to occur in association with autism, their relationship with other mental disorders is not a well studied area. Some studies have related them with ADHD, behavioural disorders and learning disorders. Some studies also comproved that SPD are a valid diagnosis and that there are individuals with SPD who do not meet the criteria for other known disorder. One study found an abnormal white matter microstructure in children with SPD. Despite these findings SPD need to be further studied.

The authors have not supplied their declaration of competing interest.