PID

My husband is suffering from back pain. In medical (short) term they call it PID. I don't know what exactly PID means but from my googalation (is there such a word?!) I found few articles on PID. I'm pretty sure i got it right, it's actually mean "Prolapsed Intervertebral Disc". It has got something to do with the intervertebral disc, maybe caused by lifting heavy stuff at work. I think this is what people mistakenly called it "slipped disc". I'm not a doctor or medical practitioner so I can't comment much.

So I finally found the medical definition here

He needs to go for physio every now and then. Poor hubby :'(