Midlife crisis: Causes symptoms and how to cope

What is a midlife crisis, and what age range is classically considered as midlife?
What percentage of the population experiences a midlife crisis?
Are there any physiological diagnostic criteria or biomarkers associated with a midlife crisis?
What are the key differences between men and women's experiences of a midlife crisis?
What are the medical aspects, diagnostic criteria, treatments, and prognosis of a midlife crisis?
How does a midlife crisis manifest in individuals from different backgrounds and life situations?
What type of person is more likely to experience a midlife crisis, considering factors like intellect, socioeconomic status, success, and gender?
Important Highlights:

A midlife crisis occurs between ages 40-60, reflecting a time of self-reflection and questioning of achievements and identity.
Around 10-20% of individuals may experience a midlife crisis, depending on definitions and measures used.
No specific biomarkers or medical signs are used to diagnose a midlife crisis; it's more of a psychosocial phenomenon.
Men and women may experience midlife crises differently, with distinct triggers, manifestations, and possibly linked to hormonal changes.
Midlife crisis can cause feelings of anxiety, depression, dissatisfaction, but may also lead to growth and renewal.
Various examples, such as a successful executive shifting careers or a mother redefining her identity after raising children, illustrate how a midlife crisis can manifest.
Prognosis for a midlife crisis is generally favorable, with potential for increased self-understanding and alignment with personal values.
Midlife crisis experiences may vary widely depending on cultural, societal, individual, and personality factors.