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It is rather unusual (not unknown) to have an attack at this age...
The description of pain does not suggest an attack...
There are several other causes that can cause pain in and around that area...
He should be investigated...
EKG / HOLTER (24 to 48 hour ambulatory monitoring) / ECHOcardiogram
/ TMT (Treadmill exercise ECG) / LABORATORY work-up – may all be necessary for further assessment and assistance.
Mostly to exclude and reassure / rather than to rule in!
The treating doctor may suggest them depending on need, based on his assessment of the situation.
Wishing speedy recovery