But if it were shortness of breath, or chest pain, or chronic heart or kidney disease, which so many patients have and live with, then it could be 10x worse if you didn't know or note its progression! Your patient could have a heart attack or stroke or worse!
Because there is a good chance they may still be experiencing them - don't assume it's resolved unless the expressly tell you it has and don't think that it's only a little thing that they have to learn to live with when there may be remedies out there - not all have to be drugs - that may help.
Remember too that sometimes you will forget things! So encourage your patients to tell them EVERYTHING about themselves and especially with long term patients - write everything down so you DO remember - and ask them about problems that you may have think had been resolved (they can come back!) - even if it means flicking back to a records from a few weeks ago - or things they haven't brought up in a while - because they may, like me, and like so many patients with chronic diseases, have learnt to live with it (I bet many of your chronic patients are frustrated too when you don't believe them or take action on symptoms that are destroying their lives).
This happened once with one of my medications too - bactrium - a prophylactic (prevention) medication against pneumocystitis after bone marrow transplants. I had been taking it for a while - but through some miscommunication I thought I had to stop it. Apparently he meant another drug though and I was left vulnerable to the dangerous disease. So I stopped taking it for around a month and when I began my azacitidine treatment - I developed a chest infection and was treated by doctors at another hospital in emergency. They wondered why I wasn't on bactrium and only after a bit of digging up did they find out what had happened.
Sometimes we both make mistakes!