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.
The main cause of scurvy is a deficiency of vitamin C. If you have not been taking your daily recommended allowance of vitamin C, it will eventually cause scurvy. The deficiency could be caused due to restrictive diets, allergies to vitamin C, anorexia, or a largely meat or fish diet.here are no other causes of scurvy disease other than the deficiency of vitamin C. There may be other causes of bleeding gums, and if this is the only symptom you are experiencing, you may be afflicted with some oral infection and not scurvy.