Sensory issues aren’t an official condition. That means there is no formal criteria for a diagnosis.
Instead, doctors, educators, or healthcare providers who work with children who have issues with processing sensory information work off what they see in the child’s behaviours and interactions. Generally, these sensory issues are highly visible which makes a diagnosis easier.
In some cases, professionals may use the Sensory Integration and Praxis Tests (SIPT) or the Sensory Processing Measure (SPM). Both of these tests can help healthcare providers and educators better understand a child’s sensory functioning.
For more information: https://raisingchildren.net.au/guides/a-z-health-reference/sensory-processing-difficulties