In simple terms, acroanesthesia, or acroatia, is a temporary anesthesia (skin anesthesia) that occurs when the limbs move suddenly upward. This phenomenon was first discovered back in the 18th and 19th centuries and was called acrosation. To date, acroanesthesia has been studied in sufficient detail; its physiological mechanisms and consequences have been described both in healthy people and in patients with various diseases. However, in medicine there are still no specific instructions on whether acroanesthesia can be considered a sign of pathology, and under what conditions it can occur. Acroanesthesia is also called the absence of a reflex from the Achilles tendon, the Babinski reflex: plantar extensor - plantar flexion reflex (during this reflex, a person withdraws the foot when touching the foot of the person asking. But in Europe it is also common to call this phenomenon acroophthalmia: blindness