Diagnosis of Asperger syndrome can be tricky as there is a lack of a standardized diagnostic screening for the disorder.[6] According to the US National Institute of Neurological Disorders and Stroke, physicians look for the presence of a primary group of behaviors to make a diagnosis such as abnormal eye contact, aloofness, failure to respond when called by name, failure to use gestures to point or show, lack of interactive play with others, and a lack of interest in peers.