The period of gradual functional decline prior to acute symptoms is the prodromal phase of schizophrenia.
Precursor schizophrenia is the earliest stage of schizophrenia. Not all people with schizophrenia experience this stage. Typical symptoms of the prodromal stage include nervousness, anxiety, depression, poor concentration, and excessive labor.
The term "prodrome" refers to the early stages and symptoms of the disease. This is where you may notice changes in the way people feel, think and act. However, symptoms such as chaotic thoughts and behaviors, hallucinations, and delusions do not occur.
Prodromes, which last for months to two years, are typical, but some people diagnosed with schizophrenia a few years later first began to notice prodromes.
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