What is the primary feature of conversion disorder?

The primary feature of conversion disorder is the presence of unexplained neurological complaints, such as blindness or paralysis. This condition is characterized by the psychological conflict being manifested as a neurological symptom without any identifiable organic cause. Patients might present with symptoms that suggest a neurological condition, such as motor or sensory dysfunction, which cannot be explained by medical evaluation, imaging, or neurological tests. Unlike other conditions that may present multiple symptoms across various organ systems, conversion disorder is specifically linked to neurological functioning and is not the result of any detectable medical disorder. Hence, the focus on unexplained neurological symptoms is what clearly defines this disorder in the context of psychiatric evaluation and management.