Coin Proof

The coin test is one of the methods of differential diagnosis between functional and organic sensitivity disorders. It is based on the fact that when feeling two coins with both hands, a patient with organic hypoesthesia will perceive a smaller coin on the affected side, and a patient with functional hypoesthesia will perceive a larger or regular-sized coin. This is due to the fact that in the first case there is a disruption in the transmission of nerve impulses from peripheral receptors to the central nervous system, which leads to a distorted perception of the size of coins. In the second case, functional hypoesthesia is not associated with a disturbance in the transmission of nerve impulses, and therefore the coins are perceived to be of normal size. Thus, the coin test can help in diagnosing various types of sensory disorders and determining their cause.

The coin test is a method that is used in medicine for differential diagnosis between organic and functional sensitivity disorders. It is based on the principle that if a patient feels two coins with his eyes closed and one of them seems smaller than the other, then this may indicate the presence of an organic lesion of a nerve or nerve of the brain. If the sensation of the coin does not change regardless of its position in the hand, then this means that the disorder is caused by functional factors such as stress, depression or fatigue.

How is coin proof used? The patient should place his palms on the table, placing them parallel to each other at a short distance. Then he is asked to feel two coins of the same size, but of different purity - one coin is gold, and the other is copper. With normal functioning of the nervous system and the absence of sensory disturbances, coins will be felt to be the same size in both copper and gold, because they both have the same thickness and mass. However, if the patient has an organic lesion of the nervous system, then he may feel gold more than copper, because with an organic lesion the nerves cease to transmit information about sensory sensations correctly. Thus, a patient with this pathology perceives copper as a thinner coin than gold. In other cases, when the sensitivity disorder is not associated with organic nerve damage, the patient may feel both coins of the same or similar size due to the influence of the functional nature of the disorder. In such cases, loss of sensation may be caused by stress or emotional overload, which can temporarily disrupt the functioning of nerve cells. It is important to note that the coin test is not the only diagnostic method and should be used in combination with other research methods. For example, a blood test or x-ray can help clarify the diagnosis and prescribe appropriate treatment. But the coin test method can provide additional information about the nature of the disorder and help identify the causes of its occurrence.