What is the definition or description of: inappropriate affect?

Lack of harmony: Affect or mood exhibited by the patient , usually goes hand in hand with the thought content expressed by speech. So incongruity means there is absence of that harmony or congruity, so the patient is describing a genuinely painful and sad, or fearful experience and feeling, while exhibiting feelings of joy and exuberance ..And visa versa..It is most suggestive of schizophrenia.

See Below: An affect that is incongruent (doesn't match) with the situation or the content of thoughts and/or talk. For example, laughing when talking about a tragic loss.