Google Trends: Erectile Dysfunction and Vulvodynia
trends.google.com
trends.google.com
But yeah, I would say a lack of knowledge and a common view that female discomfort/pain during sex can be seen as just "bad sex".
According to Wikipedia, as many as 15% of all females are affected by this, yet both research and treatment are very lacking.
We really need to start talking about this.
Oh the irony: https://i.imgur.com/RSz14qH.png