I had an inguinal hernia surgery before 4 years. from a year whenever i masturbate i feel pain and discomfort in my surgical area.what's the reason?

Need re-evaluation: Your inguinal surgical scar pain on masturbation could be a sign of recurrence of hernia or seratoma or from scar or infection.

Might be a kink: During surgery inadvertently a suture can trap tissue or blood vessel, constrict them. Do have during normal sex ?

S/P HERNIA OR: Please see your surgeon there might be some scarring or adhesions in the or area.