I live very nearby our main hospital and the bus stop is directly outside the entrance, so whenever I'm waiting there's ALWAYS someone bound to come beetling up to catch the same bus and though I try to get away with a polite smile and "hello" they always throw their opening gambit at me - "I've just had to see a Consultant...." which obliges me, out of basic manners, to reply "Oh - is there something wrong?"
And I get their full medical history, detail for detail, medication for medication, agony for agony Ad Nauseam.
And the worst thing is that I sense they revel in their 'horror' stories. Drone, drone, drone. Still, maybe their nearest & dearest have got tired and given them a sharp "shut up!"