Snout reflex

Snout Reflex is a reflex that is tested as part of a neurological examination to assess the brain's frontal lobes and brainstem. The reflex is named for the pouting or pursing of the lips that occurs when the area around the mouth is touched.

Overview

The Snout Reflex is considered a primitive reflex, meaning it is normally found in infants but should disappear by adulthood. If the reflex is present in an adult, it is often a sign of neurological damage, particularly to the frontal lobes or brainstem. The reflex is tested by lightly tapping the patient's lips with a soft object, such as a tongue depressor. If the reflex is present, the lips will pout or purse, similar to the way a snout might move.

Clinical Significance

The presence of the Snout Reflex in adults can be a sign of several neurological conditions, including Parkinson's disease, Alzheimer's disease, and progressive supranuclear palsy. It can also be a sign of damage due to stroke or traumatic brain injury. The reflex is often tested as part of a neurological examination, along with other primitive reflexes such as the grasp reflex and the rooting reflex.

See Also

• Primitive reflexes
• Neurological examination
• Frontal lobes
• Brainstem

References

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