As a symptom, alogia primarily occurs in people with schizophrenia or schizotypal personality disorder. Most experts consider it a negative symptom, meaning that it is a typical function that has become weaker or is absent. In alogia’s case, this would be a diminished ability to speak.
Not only are negative symptoms like alogia major diagnostic signs for schizophrenia, but they also determine the potential morbidity of the condition.

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