What is sad nipple syndrome?

The nipples are an erogenous zone for many people. But as it turns out, having them touched can bring on a whole other kind of feeling for others. The so-called sad nipple syndrome has been discussed more openly on Reddit and Tiktok in the last few years, raising awareness. But it still remains somewhat of a mystery.

It refers to a wave of negative emotions on a person when their nipples are touched, or come into contact with clothing that’s too tight. It seems to be more common in women, but there have been cases of me...