The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans(oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust).
The problem behind your itchy skin might be insufficient vitamin intake. There are a number of vitamins that promote the hydration and healthiness of your skin. A shortage in these could trigger itchiness, dry skin and other skin conditions. Alternatively, an overdose of such vitamins might also lead to itchy skin.
Deficiencies of these nutrients, Â­although uncommon, may cause a litany of hairâand, sometimes, skin and nailâchanges. Over time, for instance, insufficient intake of vitamins A and E can cause rough, scaly skin patches. A deficiency of biotin may cause eczema and hair loss.