Here’s an interesting quiz to find out how in touch you are with your own or other’s emotions.
Alexithymia is a Greek term meaning emotional blindness (a–without; lex–word; thymia–feeling). A person with alexithymia has problems understanding their own emotional state or those of other people. They may feel emotionally numb or even have a flat affect. They could be extremely reserved or shy, or just seem aloof or cold to others. They could come across as “mysterious” or inaccessible.

Low levels of alexithymia are correlated with high empathy, ability to engage emotionally in relationships, and having an active imagination. A very low score would indicate neediness and high emotional lability (common in most people with BPD, Histrionic PD, or Dependent PD).

Personality disorders associated with alexithymia are Schizoid, Antisocial, Avoidant, Narcissistic, Obsessive Compulsive, and sometimes Schizotypal. PTSD can also be associated with alexithymia.

Here is the test:
http://www.alexithymia.us/test-alex.html

My results:

My total score was 108 (possible alexithymic).

Category: Difficulty Identifying Feelings: 17 Points
In this category you show some alexithymic traits.

Category: Difficulty Describing Feelings: 10 Points
In this category you show no alexithymic traits.

Category: Vicarious Interpretation of Feelings: 11 Points
In this category you show high alexithymic traits.

Category: Externally-Oriented Thinking: 17 Points
In this category you show no alexithymic traits.

Category: Restricted Imaginative Processes: 18 Points
In this category you show some alexithymic traits.

Category: Problematic Interpersonal Relationships: 20 Points
In this category you show high alexithymic traits.

Category: Sexual Difficulties and Disinterest: 15 Points
In this category you show high alexithymic traits.

This seems to describe me well.