Treatment ranges from physiotherapy, heat treatment and traction
for the backache, medication to control pain and reduce
inflammation to surgery to remove the prolapsed disc. The risks
vary according to the treatment and the location of the slipped
disc. Painkillers are very safe although too much of it can lead to
stomach bleeds. Physiotherapy and traction are of course extremely
safe unless your therapist was trained by the Spanish Inquisitors
As for surgery, there is always a risk of paralysis but that risk
is extremely small...I haven't known of anyone personally who
suffered that complication. Your surgeon will be able (and required
by law) to explain the complication rate of whatever treatment in
your particular case, taking into account the site of the disc,
severity of the prolapse and any co-morbidities you might
have.
Much depends on how mild it is and the impact it has on your
lifestyle. To a sedentary retiree, a moderate PID with pain that
can be controlled by medication may be tolerable whilst a young man
may find mild PID a significant impediment to his activity...you
chasing girls up the hill? 
