Hair loss is a condition in which the hair falls at an abnormal rate eventually leading topartial or complete loss of hair. And they do differ in men and women. The average scalp contains about 100,000 hairs. Studies show that losing up to 100-150 hairs per day are normal. Human hair naturally grows in three phases: anagen, catagen, and telogen. Anagen is the active or growing phase. Catagen is a fairly short phase of the natural hair cycle during which hairs begin to break down. Telogen is the resting phase. The hairs that are shed daily are often in the resting or late phase in the hair cycle. Normally, about 10% of the scalp hairs are in the resting or telogen phase at any time.

In general, most hair loss is not associated with systemic or internal disease, nor is poor diet a frequent factor. Frequently, hair may simply thin as a result of predetermined genetic factors, family history, and the overall aging process.

Losing hair can be stressful during a time when you’re already concerned about appearance. Most of the time, hair loss during the teen years is temporary. With temporary hair loss, the hair usually grows back after the problem that causes it is corrected.