In females, this occurrence is known as menopause. The male counterpart to this is known as Andropause.
In mild cases where men do not encounter pain or sexual dysfunction, they do not need treatment. The condition may improve over time by itself over a period of 12 months.
In those more serious cases where men encounter sexual dysfunctional and psychological negative impact, one should seek medical treatment.
Extracorporal Shockwave Therapy (ESWT)