[Spoppys]

It's a worrying thought. My dad has become much less empathetic and more bitter over the past decade. I'd assumed it might have been the pain that was at least partially responsible, now I'm wondering if its actually the painkillers

[radmarshallb]

Chronic pain will chip away even the kindest person's ability to care about anything else.

[malandrew]

It could also be the pain itself. My dad’s Parkinson’s and congestive heart failure did the same to him long before medicines were involved.