Alopecia (chronic telogen effluvium): The term “telogen effluvium” was coined by Kligman in 1961. Is the acute loss of hair after chronic systemic diseases, emotional stress, febrile illness or childbirth. In the latter, telogen effluvium can last up to 6 months after full recovery.

Alopecia drugs: Vitamin A in large doses, cytostatic, thyroid, anticoagulated, mercury and valproic acid can produce alopecia. When the drug is stopped hair loss disappears.

Alopecia in systemic diseases: of endocrine, infectious, Lupus erythematosus or nutritional deficiency.

Alopecia hereditary syndromes:

The case of congenital atriquia the individio hairless. Also found in temporal triangular alopecia in the syndrome of hair loss in anagen, the hair hypoplasia and cartilage in Menkes syndrome in anhidrotic ectodermal dysplasia and tricorrinofalángico syndrome.

Cicatricial alopecia:

Unfortunately this type of alopecia because there is usually irreversible damage, malformation or complete rupture of the follicular structure. There is no treatment or drug that helps with hair follicles in an inert. If there are no damaged areas can be used to implant hair.
Scarring alopecia are classified as follows:

Alopecia infectious fungal (Kerion, candidiasis, favus), bacterial (syphilis, leprosy, acne necrotic) viral (herpes, varicella); protozoa (Leishmaniasis).

Alopecia physicochemical agents, caustic agents, mechanical trauma, burns and X-ray rediodermitis Consider that the follicles are sensitive to radiation.

Alopecia tumor: dermal tumors and metastases. Mast cells, basal cell or squamous cell carcinomas, lymphomas and adnexal tumors.

Alopecia and dermatosis: Graham-Little syndrome, dermatomyositis, sarcoidosis, follicular mucinosis.

Alopecia hereditary diseases: porokeratosis of Mibelli, epidermal nevus, Darier’s disease, ichthyosis and aplasia cutis.

Alopecia decalvans clinical syndromes: erosive pustular dermatosis, folliculitis decalvans, alopecia and pseudopelade parvimaculata.

Source: www.recuperarelpelo.com/informacion-caida-cabello/tipos-de-alopecia.html
image source: www.beauty-blog.co.uk/cms/uploaded_images/alopecia-header.jpg

Traumatic alopecia is a type of alopecia that can occur for two reasons mainly:

Trichotillomania (which means the habit of pulling hair), this may be due mainly to psychological conditions in patients with mental disorders such as schizophrenia.

In patients with traumatic alopecia Trichotillomania can be observed symmetric and circumscribed areas. There may be a perifollicular erythema or even several pustules without scarring alopecia is present in areas affected by this disease. The areas affected by alopecia traumatic trichotillomania are not completely bald, are thin and have broken and twisted hair. The areas affected by alopecia traumatic trichotillomania may be the scalp, eyebrows or eyelashes, or a combination of several of them.

Drive: Hair is the absence of traumatic reasons such as:

* Hairstyles are very tense
* Brushing the hair too strong, too tight curls, etc.
* Support to the affected area as in patients who have undergone surgery for time periods longer than 6 h, and so on.

Traumatic alopecia treatments

* If you have a bad habit to tear your hair you should go immediately to your GP to try to remedy this nervous tic, especially if you feel that the tic ever going to more and worse affected areas.
* Avoid hairstyles with your hair too tight for several hours.
* Try to use a comb with rounded tips and comb your hair gently brush your hair never abruptly.
* Do not comb wet hair, tries to make the hair to be styled correctly this moist but not excessive moisture.

Although there are remedies for traumatic alopecia should consider that it is best to detect the disease early because the sooner we start the easier it is treatment that we can resolve the traumatic alopecia.