Why does random itching occur

Why do we itch sometimes?

What is itching?

Itching is an unpleasant feeling - one also says: a sensory sensation - on the skin or on the mucous membrane, in all possible parts of the body: scalp, eyes, mouth, arms, back or between the legs or at the anus. This feeling can vary greatly, from a slight tingling sensation to annoying itching to burning and pain. The itching may appear suddenly and then go away, or it may come back again and again and then persist for longer.

What is itching good for?

Itching is actually a warning sign, as is pain or freezing. Then something is wrong with the skin. So it's annoying, but actually a good thing because your body warns you.

What causes the itch?

The itching is caused by something disturbing the skin. In the skin - just below the surface - there are nerve endings. And they react to various substances from the skin and from the blood. A substance called histamine, which is stored in small "tanks" in the skin, in the mast cells, plays a major role. It also has a lot to do with allergic reactions, for example when you cannot tolerate a new piece of clothing on your skin. When itching, information is sent from the nerves via the spinal cord to the brain - and this creates a desire to itch, scratch or rub.

For example, itching can be caused by an insect that has injured the skin or injected something into it. Or a harsh soap that attacks the skin. Or the sun when you get sunburned. Triggers can include dry skin or skin that is washed too often or too seldom, hot spices, allergies or infections such as chickenpox.

The skin can also itch if you eat poorly, for example if you don't eat enough vitamins. Rarely, itching can also indicate more serious illnesses. The special thing is: Sometimes, especially in adults, itching is the first sign that a serious illness is just beginning.

Lice and fleas can also cause itching

Today dog ​​and cat fleas that jump over to humans are particularly relevant. The stitches are found in rows and groups as the flea carries out "test holes" until it comes across a blood vessel to be tapped. Small wounds develop that cause severe itching. Lice bites leave red, itchy patches on the scalp that are easily scratched, bleed, and infected. Classic places: behind the ears and in the neck.