What is alopecia?

Alopecia from the Greek alopex, is considered a synonym for baldness, it refers to the abnormal loss of hair, resulting from a pathological process. There are different types of alopecia that have their origin in different causes and that manifest themselves differently in the person who suffers it, the most common are genetic causes that mainly affect males.

Classification and types of alopeciaAlopecia is classified into different groups according to its type and the cause that causes it.

Scarring alopecia:

This type of alopecia is usually irreversible because there is damage, malformation or total rupture of the follicular structure. Scarring alopecia belongs to a type of hair loss or disappearance because of a scar there is a destruction of hair follicles, which prevents hair from appearing in the damaged area.

Diffuse or non-healing alopecia:

It is caused by a massive entry of hairs to the resting stage (telogen) or by the transformation of the terminal hair follicles into hairs. In these cases the integrity of the hair follicle is maintained and its loss is potentially reversible. There are several causes of non-healing alopecia, the most common.

Androgenetic or androgenic alopecia:

It is the most common type of alopecia affecting both men and women, with the male population being the most affected. Usually about 100 hairs are lost daily, but when there is a greater amount is when talking about Alopecia. It is characterized by a progressive miniaturization of the hair follicle of the scalp and is commonly called baldness.

Telogen Effluvium:

It is the acute loss of hair during a limited period after chronic systemic diseases, emotional stress, febrile illness or childbirth. Women are frequently affected, however, there are also cases in men. It can start about two months after the triggering cause such as: hormonal alterations (thyroid, hormone replacement therapy, pregnancy or oral contraceptive use); hypocaloric diets, iron deficiency and/or consumption of some medicines.

Traumatic alopecia:

Generally this type of alopecia is caused by injuries to the scalp due to the use of hair dryers, metal combs and/or very tight or tense hairstyles (e.g.: braids). Traumatic alopecia is generated by its own behavior that leads to hair loss, so that sometimes patients who pull out their hair can generate traumatic alopecia.

Seborrheic dermatitis:

The best known form is dandruff, it is a common skin disorder that mainly affects the scalp, causing scaly plaques, persistent dandruff and reddened skin. It can also affect the face, eyebrows, ears, eyelids, chest and sides of the nose.







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