HI, I`ve been suffering with a very painful testicle for 12 years now, it feels like it`s being jabbed by an electic probe or a very sharp needle, not all the time but it is always sore and it has been non stop pain for all those 12 years, and sometimes it gets very hard, i`ve had an ultrasound done on it, but they don`t know what`s causing it, please can you help. ?