Alexithymia is a personality trait characterized by the inability to identify and describe emotions experienced by oneself. The core characteristic of alexithymia is marked dysfunction in emotional awareness, social attachment, and interpersonal relation. Furthermore, people with high levels of alexithymia can have difficulty distinguishing and appreciating the emotions of others, which is thought to lead to unempathic and ineffective emotional responses.
High levels of alexithymia occur in approximately 10% of the population and can occur with a number of psychiatric conditions as well as any neurodevelopmental disorder. Difficulty with recognizing and talking about their emotions appears at subclinical levels in men who conform to cultural notions of masculinity (such as thinking that sadness is a feminine emotion). This is called normative male alexithymia by some researchers. However, both alexithymia itself and its association with traditionally masculine norms are consistent across genders.
https://en.m.wikipedia.org/wiki/Alexithymia