Is it possible for a child or a teen to have a heart attack?

Child heart attack. It is exceptionally rare for a child or teen to have a heart attack. Having said that, it is not impossible to have sudden cardiac death. Unlike a lack of blood flow, this problem is usually sue to a geneitc disorder known as ihss (idiopathic hypertrophic subaortic stenosis). It creates an obstruction to flow across the aortic valve. This is the kid who drops dead on the basketball court.
Heart attack child. It is possible, but is very very rare. Causes are different than for adults, ie. Not atherosclerosis.