Pain in a man's left pelvis area can be due to a number of health conditions (an injury, a bladder infection, the left kidney), but when it is coupled with pain in the testicle as well, there are many more potential causes. Some of these include Chlamydia (common sexually transmitted disease), Epididymitis (inflammation of the coiled tube near the rear of the testicle), and testicular torsion (a twisted testicle).
If an injury has occurred to the left pelvis area or the left testicle, the pain being generated may be due to damage experienced or residual injury pain, especially if the injury was recent. Another common cause of pain felt simultaneously in these areas include infections, which may have spread through the groin area. Infections that affect the testicles include Chlamydia, Epididymitis, and Orchitis. More common causes of pain in this part of the male body can include kidney stones and mumps.
Serious Testicle Conditions
Some testicle medical conditions can also produce pain in these areas too. The most serious of these--in regards to testicle health specifically--is testicular torsion, since it can lead to the death of the testicle if immediate medical attention is not sought.
Testicular torsion results when the testicle gets twisted in such a way that it starts cutting off its own blood supply. Other testicle conditions that can generate pain include testicular cancer, spermatocele (testicle fluid build-up), and retractile testicle (where the testicle pulls back into the groin).
Medical attention, especially in the case of testicular torsion, should be sought for any immediate and persistent pain that occurs in the male groin area. Physical health problems experienced in the male groin and testicle areas have the potential to not only limit reproductive capabilities but to also affect male sexual performance, making medical attention an important consideration.
Mild Pain Treatment
If the pain is mild and no serious concerns exist medically, the pain can be treated by over-the-counter pain medications like acetaminophen (Tylenol), aspirin or ibuprofen (Advil, Motrin, and others). In addition to medication use, placing some type of support around the testicle area when lying down flat (like a towel or athletic support gear) will help with the pain too. For pain accompanied by swelling, ice packs can be wrapped in a towel and used as needed support (and swelling reducer) as you rest.
If contact sports have initiated the pain, wearing an athletic supporter during future activity can help to prevent this type of pain in the future. If the pain is due to a sexually transmitted disease, using a condom during sexual contact in the future is recommended as prevention against new disease infection and the resulting pain it can cause.