The following list compiled by one mental health consumer contains some of the typical early warning signs of schizophrenia. Remember in mind that schizophrenia onset is typically among the ages of 15 and 25 however it can affect children younger than fourteen, with a subtype known as childhood-onset schizophrenia. The derangement  can come on over a period of years called insidious onset or be very rapid and it affects 1% of the general population. The list is redivide into Physical Symptoms, Feelings and Mood, Behavior, Cognitive Problems, Delusions, and Hallucinations.

Remember that only a qualified psychologist, psychiatrist or in some areas a social worker can properly diagnose schizophrenia or any other brain disorder. Psychologist or psychiatrist will use the clinical history of the person, as well as the symptoms and criteria in the DSM-IV in the United States to make a diagnosis.

Examples of the Physical Symptoms are as below:

• Blank vacant facial expression an inability to smile or express emotion through the face is so characteristic of the disease that it was given the name of affective flattening or a blunt affect.
• Overly the acute senses lights are too bright, sounds are too loud.
• Staring while in deep thought with the infrequent blinking.
• Clumsy imprecise motor skills
• Sleep disturbances,insomnia or excessive sleeping and Involuntary movements of the tongue or mouth facial dyskinesias. Grimacing at the corners of the mouth with the facial muscles or odd movements with the tongue.
• The Eye movements difficulty focusing on slow moving objects and unusual gestures or postures
• Movement is the speeded up- i.e. constant pacing and it is slowed down staying in bed in extreme cases, catatonia.