What are the causes of Babinski sign in absence of Pyramidal Tract Lesion

neurology , notes , practical notes , reflex

Babinski sign in absence of Pyramidal Tract Lesion can occur in physiological and pathological conditions

Physiological causes of Babinski sign in absence of Pyramidal Tract Lesion

Infancy (up to 1 year of age)
Deep sleep
Deep anaesthesia

Pathological causes of Babinski sign in absence of Pyramidal Tract Lesion

Narcotic overdose
Alcohol intoxication
Following electroconvulsive therapy
Coma secondary to metabolic disturbances
Post-traumatic states
Post-ictal state
In Cheyne-Stokes respiration, the extensor response may appear during the period of apnoea, whereas in the phase of active respiration the normal reflex is seen.