Someone unable to write is half-illiterate, still. Not always and not everywhere printer is available or sometimes doctors don't bother issuing printed receipts.
Printers? Who's printing? Every prescription I've gotten in the past few decades has gone electronically, from the software they use to keep charts in.
Experience will vary widely from country to country, depending on insurances subscribed and on medical establishment. Unfortunately I dealt with half-illiterate doctors in country with public healthcare and they were too arrogant to accept feedback.
