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.
A general dermatitis results as well, with overall skin dryness and itching. Riboflavin deficiency in men can cause a dermatitis-like syndrome of the scrotum with itching and scaling skin. Many skin symptoms of a vitamin deficiency occur with other disorders as well, so don't rely on the Internet for diagnosis.If you believe you have a vitamin deficiency see your doctor for help with diagnosis and treatment.iacin. The term pellagra derives from the Italian words for rough skin. If you suffer from a niacin -- vitamin B3 -- deficiency, you could develop pellagra. The World Health Organization describes the skin manifestations of niacin deficiency as starting with redness and itching on sun-exposed areas of your skin.