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Alopecia

What is alopecia?

We understand alopecia as a process in which abnormal hair loss occurs. The origin is usually hormonal despite the fact that there are different origins that produce alopecia.

When the hair completes its life cycle, it is shed from the scalp to make way for a new, younger and healthier hair. In many cases this last part of the process may not be fulfilled and that is when the absence of hair becomes something visible and disturbing.

In men over 40, alopecia is seen in 50% of the population. In men of 30 years the percentage of cases of alopecia is reduced by 20%.

Advanced alopecia can be solved with a hair graft depending on the donor capital of each patient.

How many hairs do we lose per day?

An average loss of 50-100 hairs per day is considered normal.

This hair loss is within a normal physiological process of the hair's biological cycle, where 10-15% of our hair is in the telogen phase.

The daily hair loss varies from person to person as it is proportional to the number of hairs and the duration of the anagen phase.

Hair loss becomes visible when it exceeds 50%.

On average a person has 90,000 to 150,000 hairs on the whole head with a daily loss of 100 hairs/day.

The anagen phase lasts about 3-7 years depending on breed and individual. During this time there will be a total change in the follicular cycle (hair), at random.

Hair loss can be combated with hair treatments.

Causes of hair loss

Intense, temporary or permanent hair loss can happen due to several factors:

  • Chemotherapy
  • Traumatic
  • Radiation
  • Surgeries
  • Medications (various drugs)
  • Hereditary (androgenetic alopecia, which is the most common)
  • Chemicals (by exposure)
  • Nutritional alterations
  • Hormonal disorders (thyroid diseases, androgenic diseases)
  • Systemic and localised diseases

The hairs are grouped in the form of follicular units. We have approximately 90,000 - 150,000 hairs on the scalp. This number varies from person to person according to density.

  • Blondes: 150.000
  • Chestnut tree: 115.000
  • Black: 100.000 - 109.000
  • Redhead: 90.000

The human being has approximately 120 to 260 hairs per cm2 (60-120 follicles cm2) with a total of 90,000 - 150,000 on the whole head. 

first signs of alopecia