Positive symptoms of schizophrenia include thought disorganization, delusions, hallucinations, and paranoia, which can cause sufferers to feel lost or isolated from society. Negative symptoms include ambivalence, anhedonia, affective flattening, and impoverished speech, which can make sufferers appear lacking in social situations. Mood and neurocognitive symptoms impact relationships by causing anxiety, agitation, suicidal thoughts, distractibility, and impaired abstract thinking.