What is Xeroderma?

I am quite confused about the difference between eczema and xeroderma. My question is; Is eczema a form of xeroderma? I know somebody who has a problem about xeroderma. I don't know but everytime I see her, her skin is always dry from arm to feet and even her scalp is also very dry. In fact she has also a dandruff. I am wondering if she is using a lotion or moisturizer to get rid of dry skin problem also known as xeroderma. I know she has the money to buy a lotion but it seems that she is too frugal to spent for her personal needs.

Skin problems like eczema can sometimes be very difficult. An immediate visit to the dermatologist to have a treatment of eczema is always recommended. Continue reading below for more information about Xeroderma.

Xeroderma, literally meaning "dry skin", is a condition involving the integumentary system, which in most cases can safely be treated with emollients and/or moisturizers. Xeroderma occurs most commonly on the scalp, lower legs, arms, the knuckles, the sides of the abdomen and thighs. Symptoms most associated with xeroderma are scaling (the visible peeling of the outer skin layer), itching and cracks in the skin.

Xeroderma is a very common condition. It happens more often in the winter where the cold air outside and the hot air inside creates a low relative humidity. This causes the skin to lose moisture and it may crack and peel. Bathing or hand washing too frequently, especially if one is using harsh soaps, may also contribute to xeroderma. Xeroderma can also be caused by a deficiency of vitamin A, vitamin D, systemic illness, severe sunburn, or some medication. http://en.wikipedia.org/wiki/Dry_skin