my right testicle aching when i touch it .and when i sit down ,why please

Pain within the testes generally arises from disorders of the testicle and/or the epididymis.

The most common causes include trauma, torsion (twisting of the spermatic cord, or appendix testis, or appendix epididymis), inflammation--particularly of the epididymis, varicocele (cluster of dilated blood vessels or spermatic veins),  hydrocele (collection of fluid within the scrotal sac), cysts and testicular tumors.

Please consult your physician for diagnostic and treatment options pertaining to your specific medical condition.

Painful testicle personal experiences...