Scratching an itch only provides a wonderful relief but merely for few seconds.
A new study revealed that scratching gives birth to a nerve chemical named as serotonin. After some time the chemical increases itch feeling to a great extent. One of the major functions of Serotonin is to send signals to the nerve cells.
Scratching generally gives temporary relief along with a small amount of sweet pain. The pain works as a distraction and makes the itch area of skin dead for a short time period.
The entire procedure occurs through nerve cells which convey pain signals to the cord pain rather than itch signal.
Recently, researchers discovered that itching creates more problem for the body. The brain instantly reacts to the pain and produces more amount of serotonin which increases the itching.
Zhou-feng Chen, Director of Washington’s University’s Centre for the Study discussed the main issue. He stated that the problem occurs when the pain signals force brain to release serotonin. As the serotonin travel towards the spinal cord it shifts the pain sensing neurons to nerve cells. These nerve cells boost up the intensity if itching to a large degree.
Therefore, people keep on scratching even if the specific area starts bleeding.
The experts carried out an experiment on mice which give an insight about the entire process of itching. They instill special matter that compels mice to itch and scratch.
Experiment unveils that serotonin sensitive molecules which is also known as 5HT1A plays a vital role. It is as if when you itch you turn on the switch of this particular neurons,
The study is printed in the Journal Neuron.