The word alopecia refers to any type of hair loss, thinning hair or baldness in any hairy region of the body. Baldness tends to be a more specific term among lay people, as it usually refers to hair loss on the scalp - however, it can mean hair loss in any part of the body. Alopecia areata means "hair loss in areas". In the majority of cases hair loss is a normal process of aging, and not a disease. Because it is not seen as life-threatening to doctors it is often disregarded. This is unfortunate because hair loss can cause serious distress in some people, with some far reaching psychological effects. In some cases hair loss may be a consequence of some medical treatment, especially cancer treatment drugs - when the hair loss is generally temporary.