male menopause

noun
1.
a malaise that allegedly affects men in middle age and is said to be responsible for periods of emotional upset and uncharacteristic behavior.
Origin
1945-50
British Dictionary definitions for male menopause

male menopause

noun
1.
a period in a man's later middle age in which he may experience an identity crisis as he feels age overtake his sexual powers
Contemporary definitions for male menopause
noun

a stage of a middle-aged male's life that supposedly corresponds to female menopause, with decreased sexual potency or interest and a personality crisis or depression; climacteric in the male