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.
It may even cause malformation in the unborn child. Vitamin B. B-vitamins are highly important in your skinâs production of new cells and tissue, as well as your nerve conduction and sensation. A common symptom of low vitamin B levels is itchy and flaking skin. It might even cause development of psoriasis.