My dad is 54 years old. He stands at 1.67 m and weighs 68kg. A few years ago,he experienced a mild heart attack with stroke-like symptoms and it occured again a few months ago.Usually, its his left side part(hands and legs) that get clammy,weak and cramplike).He's on medication,which he took regularly. Since a few months ago,he's experiencing that cramplike sensation at least once a week.We do not know what triggers it because it occurs quite suddenly and unexpectedly. After check up, the results show that he has a swollen heart. What causes this and is there any cure for it? By the way, my dad won't drink or smoke and did not have any bad habits.