Bumke's Symptom

Psychiatry, Neurology, Ophthalmology

Also known as: Bumke's sign, Pupillary unrest

Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.

Bumke's symptom refers to the constant fluctuation in pupil size observed in healthy individuals during emotional experiences. This reflex is noted to be absent in cases of schizophrenia.

Encyclopedia entry (1928–1936)

BUMKE'S SYMPTOM (pupillary) is expressed as a constant fluctuation in the width of the pupil, observed with the aid of a magnifying glass in healthy people during emotional experiences. In schizophrenia, this reflex disappears.

Cite this page

“Bumke's Symptom.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/bumkes-symptom/