from what you say, it seems the pain is of severe intensity.
In addition what I would like to know are:
Is the pain associated with vomiting?
Does the pain have any association with food ? Is he used to taking very spicy food?
I apologise but does your son take alcohol, the frequency of drinking and was there any binge drinking
prior to the attack?
I suppose his motions are clear.
Actually to arrive at a probable diagnosis the information is little insufficient but still just to say its because he is nervous would be wrong unless you get a couple of relevant investigations done to
rule out acute abdomen
, acute cholecystitis
or acute gastritis
). Dont worry the probabilities are not very high considering the pain has occured only twice over a perod of 4 months
2. Blood test: Serum amylase
, serum lipase,
Liver function test
Complete blood count