Psychosis is not always easy to detect. Before psychotic symptoms appear, other, more nonspecific symptoms or warning signs may occur, sometimes a few days or even a few weeks beforehand.

Some of the most common warning signs are the following:

• Feeling more tense, more afraid, or more anxious.
• Racing thoughts: having many thoughts at once, not being able to concentrate on one thing.
• Be quieter and isolate yourself.
• Feeling down, less motivated, or more irritable.
• To be more tired.
• Having strange sensations that leave me confused.
• Having little appetite, losing weight.
• Having frequent forgetfulness.
• Suddenly not being able to sleep.
• Neglecting physical appearance.