Emotional or psychological trauma refers to and intense experience that the mind is unable to process and digest. It tends to remain in an unresolved state and may stay that way for many days, months or years as a "core emotion" that can be thought of as a reservoir of emotional energy that will tend to convert into reactivity - cognitive as in OCD; emotional reactivity, as in in the survivor guilt often seen in PTSD; behavioral, as in addiction; and somatic reactivity, producing changes in posture, muscle tension and hormonal stress reactions.

The Boulder Center for Online Mindfulness Therapy