Testicular pain is pain or discomfort that is felt in one or both testicles. The pain may originate from the testicle itself, or it may be the result of other conditions affecting the scrotum, groin or abdomen. Though there are numerous medical conditions that can cause testicular pain, it is important to understand that a few of them constitute medical emergencies that require immediate medical attention in order to prevent impairment or loss of testicular function. Testicular pain can be an acute (short-term) or chronic (long-term) condition. The testicular pain may be constant or intermittent.
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During aging, there is a gradual decrease in the ability to maintain skeletal muscle function and mass. This condition is called " sarcopenia ", and may be distinct from atrophy in its pathophysiology. While the exact cause of sarcopenia is unknown, it may be induced by a combination of a gradual failure in the " satellite cells " which help to regenerate skeletal muscle fibers, and a decrease in sensitivity to or the availability of critical secreted growth factors which are necessary to maintain muscle mass and satellite cell survival.