There are many reasons why a person can develop dandruff. It might be due to yeast infection on the scalp, stress, nutritional deficiencies and improper use of hair products like dyes, gels, hair sprays, blower, hair iron and not shampooing regularly.
nutritional deficiencies
Anorexia Nervosa – A Psychiatric Obsession To Be Thin
Anorexia nervosa is characterized by self starvation and excessive weight loss. It is a psychiatric disorder once known as “Golden Girl Syndrome” because it struck primarily rich, white, well educated young Western women, it was first documented in Japan in the 1960s.