the presence of something that is normally absent.
             There are still more symptoms. These are ones that affect the person's emotions,
             interest, and energy. The person may have the wrong emotions where they would react
             opposite to a situation than what would be expected. They may laugh at something horrible or cry at something funny. They may have or show no emotions at all. The person can become withdrawn, and isolate themselves. They might avoid social situations. These are negative symptoms. This is where something normally present is absent.
             Their speech and behavior may also be affected due to the interference in their thoughts. T
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