Hair Loss – Alopecia
Hair loss, medically referred to as alopecia, is a common complaint among patients visiting the dermatologist and can be the source of significant physical and psychological stress. It is important to review some basic facts about alopecia in order to better understand the work-up and treatment options available for the type of hair loss you may be suffering from.
What is Alopecia?
Hair grows in three phases: anagen (growth phase), catagen (regression phase), and telogen (resting phase). At any given time, about 83-85% of hairs are in anagen, 1-2% are in catagen, and about 10-15% are in telogen. The hair on the scalp is pre-programmed to shed approximately 100 hairs per day and to grow about 1cm/month. The number of times per week that you wash or brush your hair does not affect this growth and shedding cycle.