What is conversion ?

Conversion: Depends upon the context in which you heard it. If referring to a conversion disorder, this is an ailment whereby the person experiences or displays physical symptoms of a non-organic cause (blindness, pseudoseizures, and paralysis are common). These displays are usually due to an extreme psychological/emotional trauma. The mind protects itself by converting the mental trauma to a physical one.

Body-talk: A conversion reaction is when a person has an emotional reaction that he or she is not aware of, and instead of being able to verbalize that emotion, the body "communicates" it with a symptoms. Conversion symptoms can be common like dizziness, or more complex like paralysis, wheezing or inability to speak.