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Eruption It is a concept that can be used in the field of geology to name the emission of matter (either solid, liquid or gas) through cracks or openings in the earth's crust . The most common is to associate the term with volcanoes , when the eruptions are violent, although there are also other types of eruptions (such as those that occur in the you will solfataras ).

It is very difficult to predict volcanic eruptions. Sometimes, these arrive preceded by seismic movements and for the emission of fumaroles (a mixture of gases and vapors). The substance that volcanoes expel in eruptions is known as wash , a viscous magma with temperatures above 700 ° C.

It should be noted that, according to their characteristics, volcanic eruptions receive different names. It is possible to talk about hawaiian eruption , krakatoana eruption , strombolian rash , underwater eruption , etc.

Many are the volcanic eruptions that have occurred throughout history and that have caused serious consequences throughout the world. However, among the most significant, due to its scope and the damages caused, are, for example, that of Vesuvius in 79 AD.

The city of Herculaneum was the one that was totally buried by the violent and forceful eruption of the Vesuvius volcano, which in principle was considered to be extinct but which with this action proved that it was not so.

The eruption of Krakatoa in 1883, Tambora in 1815 or Kelut in 1586 were other of the most important and bloody of how many have occurred to this day. And they caused 36,417, 82,000 and 10,000 deaths respectively.

Nor could we ignore the existence of what is known as solar eruption. It is a unique natural phenomenon that translates into an explosion in what is the photosphere of the king star. In the year 1859 it was when, for the first time, this event was known that occurred much more forcefully in 2003 and in 1989.

For the dermatology , the rash is the appearance in the skin or in the mucous membranes of swelling or redness, which implies a change in texture and color. It can be grains, spots, vesicles, hives, bruises or other types of lumps.

The simple skin rash , known as dermatitis , may have different causes. The contact dermatitis It is caused when the skin touches certain chemicals or poisons, such as some detergents or plants such as ivy.

There are many causes that can lead to a rash. Among those we could highlight from medications to bites of various insects through situations of stress or fear.

Regardless of any of the origins of that one, it should be noted that the person who has it does not scratch, do not use cosmetics or soaps and bet on warm water to wash.

The seborrheic dermatitis It is a rash that appears around the eyelids, eyebrows, behind the ears or on the scalp. Oily skin, the stress and extreme temperatures contribute to its appearance.

Chickenpox, measles, rubella, herpes and psoriasis are diseases They also produce rashes.

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