Alexithymic

Alexithymic is defined as "Displaying or characterized by an inability to recognize and express emotions." Alexithymic contains the Greek words , , and -, or "not or without," "speech," and "soul," respectively. The word is only 33 years old. It enters the English language in P. E. Sifneos' Short-Term Psychotherapy. He wrote that "Schizophrenic patients who are notorious for having ‘a lack of affect’ can at times have violent emotional explosions... The ability, then, not only to recognize and express emotions but also to verbalize them is significant... I would like to introduce the term alexithymic..to describe patients who present these difficulties."

Word definition and etymology: OED
Photo source: www.emotionalprocessing.org.uk