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Non-organic symptoms and signs have been one of the main targets of neurology for more than a century. The Babinski sign, the most renowned milestone in neurological symptomatology, has been also devised to differentiate between organic and non-organic hemiparesis. Conversion disorders, so-called ‘hysteria’, continues to be a nightmare of neurologists even in this modern era. In fact, development of various sophisticated imaging studies increased the number of tests that might be performed to exclude organic disorders. The medical costs consumed during evaluation of patients with conversion disorders is enormous in most countries. In this regard, the demand for positive clinical signs for conversion …
Competing interests None.
Provenance and peer review Commissioned; internally peer reviewed.