“Many people with Asperger’s startle easily. An unexpected stimulus, such as someone casually calling out their name, can create that discomfort. The fight-or-flight response then begins pumping all kinds of chemicals, such as cortisol, into our nervous systems to get us ready for battle. But sometimes there is no battle.”
Asperger’s Syndrome and Anxiety – A Guide to Successful Stress Management; by Nick Dubin 2009 – Page 29.