What Is Telogen Effluvium?

Phases of hair growth

As I mentioned before, hair grows based on life cycles or phases. There are three phases in the hair growth cycle that can occur at the same time in different areas of the head:

  • Anagen phase: this is the growth phase that lasts between 2 and 8 years and in this state is usually 90% of the hair.
  • Catagen phase: this is the transition phase in which the hair stops growing for a period of 2 to 3 weeks. In this state you will find 1% hair
  • Telogen phase: this is the resting phase that affects approximately 9% of the hair and lasts 2 to 3 months. A telogen effluvium is a diffuse alopecia produced by «detachment» as a consequence of an exogenous or endogenous aggression on the hair follicles, which causes an alteration of the capillary cycle.

Telogen effluvium occurs when many hair follicles that are in the anagen phase – of growth – pass prematurely to the telogen phase – of hair loss. From here comes his name. It is simply the fact that we find more follicles in a state of rest more than normal and may not affect all the parts of the scalp equally, with the hair usually becoming thinner on the upper part of the scalp. head. Seasonal telogen effluvium.

We have reasons to say that hair does fall in spring. This is due to a seasonal telogen effluvium, which affects the majority of the population due to the photoperiod, through which light alters our hormones and, in turn, our hair

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