All human beings have this so called "middle-age crisis" but it manifests itself differently from one person to the other. Also the "middle-age" term does not really have to be taken literally; some go through this crisis as they approach their forties while others get hit in their fifties or even in their sixties. People get hit differently as well – and when I say "people", I mean men and women equally!
I have seen veiled women take off their veil as they approached forty, others had plastic surgery as they hit menopause, and many had affairs – full fledged affairs. With men, mid-life crisis could be as simple as dying the hair and could get as drastic as walking out on their families and getting married to someone who was younger than their youngest kid.