It's not my role to ask about back pain…
As an AHP it is your role to support the health and well-being of your patients/clients. This can mean that you give information and to signpost to sources of support and advice on matters related to your client's/patient's health and well-being. With the high prevalence of back pain in the general population, particularly in people who are middle aged and above, then it is likely to be valuable information.
But I'm not an expert in back pain…
You don't have to be an expert to give brief advice. Remember the 3 key evidence based messages for LBP prevention and you can't go wrong.
They will wonder why on earth I'm talking about back pain when I'm seeing them for a completely unrelated problem!
If you can make a link for the person which explains why you are talking about back pain, then they are much more likely to accept it. For instance, say something that you have observed
"I noticed that you looked in pain when you sat down" or just give a simple explanation as to why you think it may be of benefit to them to talk about back pain.
"Because 8 out of 10 people get back pain at some point, a little bit of knowledge to help you prevent back pain might come in useful to you one day".