Final answer:
The early warning sign for the subsequent onset of schizophrenia is a combination of balance and posture problems, repetitive motor behaviors, difficulty with planning and executing tasks, poor judgment, and/or personality changes.
Step-by-step explanation:
Some of the early warning signs for the subsequent onset of schizophrenia is balance and posture problems, repetitive motor behaviors, difficulty with planning and executing tasks, poor judgment, and/or personality changes.