Psychosomatic Symptom Disorder (formerly known as somatoform disorder) is observed more commonly in women than in men. Some research suggests that patriarchal societal structures and the upbringing of women in more passive roles from childhood may contribute to the higher incidence of somatization disorders in women. Furthermore, this disorder is more prevalent in lower socioeconomic and cultural strata, and while less common in Western cultures, it is frequently observed in Eastern cultures. The general prevalence of psychosomatic symptom disorder in the population is estimated to be between 5% and 7%. Symptoms can emerge at any age, but are most frequently seen between 20 and 30 years old. The reasons for its 5 to 10 times higher prevalence in women compared to men are thought to include factors such as sex-linked biological differences and cultural influences.