Brissaud's reflex

Brissaud's reflex is a medical term referring to a neurological reflex that is characterized by the extension of the big toe when the inner side of the sole of the foot is stroked. This reflex is named after the French neurologist Edouard Brissaud.

Overview

Brissaud's reflex is a type of Babinski reflex, which is a normal reflex in infants but can indicate damage to the central nervous system in adults. The reflex is elicited by stroking the inner side of the sole of the foot, which causes the big toe to extend upward. This is different from the normal response, where the toes curl downward.

Clinical Significance

The presence of Brissaud's reflex in adults can be a sign of various neurological conditions, including stroke, multiple sclerosis, and spinal cord injury. It can also be seen in conditions that cause damage to the motor neurons, such as amyotrophic lateral sclerosis (ALS).

Diagnosis

The reflex is tested as part of a neurological examination. The healthcare provider will stroke the inner side of the sole of the foot with a blunt instrument and observe the response of the toes. If the big toe extends upward, this is considered a positive Brissaud's reflex.

Treatment

Treatment for a positive Brissaud's reflex involves addressing the underlying neurological condition. This may involve medication, physical therapy, or in some cases, surgery.

See Also

• Babinski reflex
• Neurological examination
• Stroke
• Multiple sclerosis
• Spinal cord injury
• Amyotrophic lateral sclerosis