Why does dandruff appear? Detailed answer

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Why does dandruff appear? Detailed answer

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Why does dandruff appear?

Medicine still does not know the exact answer to the question of the causes of dandruff. Dandruff can be considered a scalp disease in which small flakes appear on the scalp and hair. The scientific name for this phenomenon is seborrheic eczema. There is a lot of evidence that this condition of the scalp is caused by some kind of infection. But this has not yet been conclusively proven, and the causative agent of such an infection has not been found.

We know that dandruff almost always occurs when certain glands associated with the hair roots become overactive. They are called sebaceous glands and produce a substance called sebum. This substance forms scales or flakes, and because of this, the head begins to itch.

Sometimes dandruff appears if the amount of fungal formations or bacteria on the head exceeds the usual norm. But, probably, these factors do not have a big impact on dandruff. They just make things worse. Of course, if dandruff causes severe itching and the person itches, then this can lead to infection, since these microorganisms can penetrate deep into the damaged skin.

In cases where dandruff is minor, it is enough to wash your hair once or twice a week and massage your head thoroughly to get rid of excess oil and dandruff flakes. Such measures can help in many cases. But in difficult situations, when even washing your hair can cause discomfort, you need to go to the doctor.

Author: Likum A.

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Who are the Neanderthals?

To understand how human development took place, scientists carefully study everything that remains of primitive people: tools of labor and hunting, dishes, skeletons, etc. In 1856, the remains of several people. So for the first time the skeletons of primitive people were discovered, preserved entirely due to the fact that the ancient inhabitants of the caves buried their dead. As you might guess, they were called Neanderthals in honor of the Neanderthal area, where their remains were found.

Scientists hypothesize that Neanderthals lived for about 70 years in Central Asia, the Middle East and many regions of Europe. They appeared on Earth about 000 years ago.

What did a typical Neanderthal look like? He was a strong, stocky man. His face was very different from the face of a modern person: flat cheekbones, a heavy, far protruding jaw, a low forehead and an almost absent chin - such is the portrait of a normal Neanderthal. It is possible that early Neanderthals lived outdoors during the warming period between ice ages.

However, after a new cold snap, they moved under the arches of the caves and learned to fight the cold. Many hearths found in caves prove that these people used fire to keep them warm and protect them from predators. It is also very likely that they cooked food on it.

Neanderthals knew how to make not only hand axes, but also flint tools. The latter were wide fragments of stones with well-honed edges. Some of them were in the form of irregular triangles and, apparently, were used as knives for skinning and cutting the meat of slaughtered animals.

It is possible that Neanderthal hunters also had wooden spears pointed at the end. And, finally, one very interesting detail about the Neanderthals: their brains were larger than the brains of modern humans!

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