By definition,
psychosisPsychosis is loss of reality testing with delusions and hallucinations.
Thought can be divided into process and content.
Process refers to the way in which a person puts things together. An individual may have either an overabundance or a lack of ideas. Terms like flight of ideas(used in
maniaTrichotillomania - top of the head), and racing thoughts are used in this criteria.
Content refers to what a person is actuallyisthinkingabout: ideas, beliefs, preoccupations, obsessions. Delusions, paranoia, phobias are included in this category.
Depending on one's presentation, a thought disorder can either be psychotic (paranoia, delusions) or not (obsessions, phobias)