Hair loss is a normal phenomenon. Hair grows from the hair follicle at an average rate of a 1/2 inch per month. Usual life span of each hair is 2 to 6 years before it falls out and then new hair starts growing in its place. At any one time, about 85% of the hair is growing and 15% is resting. But a hair loss of more than 50-100 hair in a day is usually considered as a signal for impending hair loss or ‘Alopecia’. Although hair loss may not be physically disabling but it can be emotionally very disturbing.
What is Alopecia
Alopecia is defined as a partial or complete loss of hair. It may be noticed by a person as hair entangled in comb or thinning of the hair or small patches of hair loss.
Common causes of hair loss may include nutritional deficiency (such as selenium, zinc, vitamin B), prolonged illness (such as typhoid, tuberculosis), hormonal changes (such as during pregnancy, menopause, thyroid disorders) and stress.