Thank you for sharing your query on Healthcaremagic, I have carefully worked through your case and I think you are right, probably the main cause of his symptoms are vascular although we can dismiss others disorders like problems with the sweat glands, I advice you go to the doctor because at his age the vascular cause has a congenital/ malformation base, just avoid an exaggeration in the physical activities until you have a right diagnostic.I hope that my advice has been helpful,take care