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.
Certain groups, such as older adults and pregnant women, need larger amounts of some types of vitamin B. Certain conditions, such as Crohnâs disease, Celiac disease, HIV, and misuse of alcohol can result in poor absorption of vitamin B. Symptoms of a deficiency depend on what type of vitamin B you lack. They can range from fatigue and confusion to anemia or a compromised immune system. Skin rashes also can occur.