Testicular atrophy is a medical term for what basically amounts to shrinking or shriveling testicles. Unusually small testicles aren’t usually included; the term is typically reserved for organs that start out healthy, then begin to wither and shrink without warning. A number of different things can cause this sort of atrophy, though hormonal imbalances and drug use are two of the most common. Old age, injury, and certain diseases may also be to blame. Men with this condition, however caused, are likely to experience a decreased sex drive and possibly also infertility. A lot depends on the extent of the damage as well as what caused it. 

Testicular atrophy has the potential to be very serious, but a lot of this depends on what is going on at the cellular level. If a man’s germ cells have been impacted, he may become infertile, and if the Leydig cells are affected, he may experience a loss in his sex drive, which can lead to erectile dysfunction. Patients may also experience a decrease in muscle and bone mass, weight gain, moodiness, and even hot flashes.

Main point of TCM diagnosis: TCM called it 'zi wei'. The reasons are congenital, insufficient of kidney Qi, nutritive loses of testis; or contracted zi yong (testicular sore) firstly and not healed completely, thus causing testis and liver depression, then blood vessels rupture and blood stagnate, resulting in testicle atrophy. Continue to read Causes of Premature Ejaculation in TCM.