Hair renewal takes place in three phases which are known as the hair growth cycle.
Normally most of them are in the Growth or Regeneration stage in which the hair grows and grows longer.
In the second stage, which lasts about 2 weeks, the hair follicles shrink, preparing the hair for apoptosis, which takes place during the third stage of Telogenesis, which lasts three to four months.
In the case in which we experience a particularly stressful situation, a significant part of our hair (about 70% in percentage), it is possible to pass to the third stage of the hair cycle.
This results in hair loss 3 to 4 months after the period of intense stress.
The fact that between the period of time in which the stressful situation is experienced and the one in which hair apoptosis takes place there is an interval equivalent to the duration of the telogen phase, in many cases it creates confusion regarding the real cause of the problem.
So in many cases, in order to ascertain this, one should look back several months before the time when hair loss is noticed.
In most cases this type of hair loss is reversible as the damage can be repaired by stopping the cause of it within about 6 months.
In rare cases, however, it can be linked to long-term hair loss.