I have only a layman's knowledge of psychology, Granddad1943, but I have always assumed, as you do, that the usual male reluctance to go to a doctor, dentist or any other health professional is basically psychological.
I was born in 1951 and in my childhood we were told "big girls don't cry!" once we reached school age, but the boys I played with had been told that "boys don't cry" practically from the day they stopped wearing nappies. In other words when they were somewhere between 18 months and 2!
No doubt, you too remember the long list of things that were "cissy" or only things a mollycoddle did, when we were children. Complaining that something hurt was one of them.
"Give me a child until he is seven; after that you can do what you like with him, but he will never forget his early upbringing" This statement (or one like it) is usually said to have been made by the Jesuits. As far as I know, neither Ignatius himself, nor any other member of the Society of Jesus actually made it, but as far as upbringing and formation of character in young children goes, it is a fairly sound principle.
We may not realise it, but the inner voice we call conscience usually sounds remarkably like one of the women who influenced our early childhood.
This being said, can we really expect those who were told from early childhood not to complain of aches and pains and never to cry tó rush to the doctor at the first sign of something being wrong?