The itching leads to wanting to scratch.
The etymology of itching refers to comestio , a late Latin word that can be translated as "action of eating." In any case, the most common use of the concept is not linked to food.
Itching is called itching that can be experienced throughout the body or in a particular area. The idea of pruritus, meanwhile, refers to itching .
What is itching
Itching, then, can be used as a synonym for pruritus, itching or itching . These sensations refer to the annoyance and discomfort caused by something that stings : that is, that stings or irritates.
Itching appears when you feel a tingling sensation on the skin . This makes the individual want or need to scratch : rub the area with fingernails or some rough element. Generally, scratching makes the itch go away, although for various reasons this action is not recommended by doctors.
insect bites
Among the most common causes of localized itching are insect bites . When an insect stings (bites or stings), it secretes a toxin that, in the person, causes a cellular reaction . Certain cells are responsible for releasing histamine , a substance that adheres to nerve receptors and sends information to the brain.
It is possible to affirm, in this framework, that itching is a consequence of the reaction of the cells and not a direct effect of the toxin. On the other hand, to eliminate the toxin that triggers the itch, the blood vessels dilate locally and filter plasma, causing a hive to appear.
It is important to mention that there are specific nerve fibers that transmit the sensation of itch to the brain. These are not the same fibers responsible for transporting the sensation of pain .
Insect bites trigger a cellular reaction that causes itching.
Other causes of itching
Insect bites are not the only cause of itching. There are chemicals and certain substances that also cause itching.
A skin disease , an allergic reaction , the presence of parasites , a nervous system disorder , certain types of cancer (and even their treatments ), and even pregnancy can make a person itch.
Why scratching can be harmful
When someone itches and scratches, they usually get relief and experience a pleasant sensation . If an individual scratches after an insect bite, for example , it will contribute to the dilation of the capillaries and cause more plasma to be released, washing away toxins and minimizing the cellular reaction.
However, the act of scratching can cause the release of more histamine, causing the body to receive more signals of itching. On the other hand, by scratching a lot, the skin can be injured and infected by the entry of microorganisms.
How to treat itching
Faced with the possible adverse effects of scratching, specialists propose other alternatives to the itching. The use of moisturizing lotions and the application of cold compresses are some of the options .
Wetting with warm water and using an antihistamine cream are among the suggested alternatives. In any case, and especially if the itching is persistent, the ideal is to consult a doctor so that the professional can indicate what steps to follow.