Up until recently, it was only associated with women. But now new research suggests it affects men as well. Picture: Max Pixel

Most people revel in that feeling of post-coital bliss, but that's not always the case.

For those who experience negative feelings after sex and even orgasm, the term has been coined postcoital dysphoria. And experts are now closely looking at the "disorder".

According to Psychology Today, postcoital dysphoria (post-sex blues) is a term to describe a wide range of negative emotions that can follow sexual activity. 

Up until recently, it was only associated with women. But now new research suggests it affects men as well.  

A 2018 study published in the Journal of Sex & Marital Therapy found that 41 percent of men reported experiencing post-coital blues at least once over the course of their lifetime, while 20 percent reported the experience at least once in the last four weeks.

What causes it? Well, experts can't really pinpoint to one specific cause, but research shows that genetics and attachment style play a role. 

It has also been found that a history of childhood sexual assault or trauma can be a predictor of life-long postcoital blues in some women, noted Psychology Today.