For a student with autism, comorbidity means there may be one or more additional diagnoses, conditions or difficulties co-existing with the diagnosis of autism that have an impact on the student. (teachermagazine.com.au)
You may need to have additional diagnosis done by a mechanic like one from YourMechanic to see if the ignition timing is correct and there is no engine vacuum leaks in the intake or vacuum lines. (yourmechanic.com)
Elsewhere (Gardner, 1998) I describe additional diagnoses that are applicable to the PAS, diagnoses that justify requests for insurance coverage. (drbarrybrody.com)