I just looked online for an excruciating problem I have. It is odd but whenever someone falls over or I see some feet in cold water, I get a pain in my testicles.
I just watched the end of 'You’ve been framed" which is one of those goof home videos sent in where everyone has an accident and it puts me in agony.
And also this quote, " Again, we don’t know what causes this kind of synesthesia, but it seems to be linked with higher levels of empathy for other people’s pain. And that may actually be relevant to the question of a link between synesthesia and fibromyalgia."