To start with, I've seen Samantha and Samandhi. And Samadhi Sutta, which interestingly discusses tranquillity and insight ( samatha and vipassana ).
There's another sutta which says that samatha and vipassana are paired qualities - samatha gets rid of passion, vipassana gets rid of delusion ( I'll see if I can find it ). Note that samatha is a quality, not a method.
Support them with there decisions and let them be
<span>in this situation, the diathesis is HIS PERSONALITY and the stressor is the MEDICAL SCHOOL EXAM
Diathesis is some part of us that are prone to medical disorder, and the stressor is every factors that could contribute to the disorder.
Panic attacks caused by a personality disorder, and in this case it is triggered by the pressure from the exam.</span>