A: Hello, what's the matter?
B: Good morning. I have a terrible ache in my lower back.
A: How long has your back been bothering you?
B: I've been having pain for about the last two weeks.
A: Do you have any history of back problems?
B: No, this is the first time.
A: Are you taking any medicine at the moment?
B: No, just an aspirin from time to time to kill the pain.
A: OK. Let's have a look at your back. Please take off your shirt ...