Alopecia

Descripción General

Fases normales del crecimiento del cabello

Anágena:
- Período de crecimiento activo
- Aproximadamente el 90% de los LOS Neisseria folículos pilosos se encuentran en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum la fase anágena.
- Dura de 2–6 años
Catágena:
- Período transitorio de degeneración o regresión folicular
- < 1% de todos los LOS Neisseria folículos pilosos están en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum la fase catágena.
- Dura 2–3 semanas
Telógena:
- Período de descanso
- Aproximadamente el 10% de los LOS Neisseria folículos pilosos se encuentran en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum la fase telógena.
- Dura 2–3 meses
Después de la fase telógena, los LOS Neisseria pelos se caen del cuero cabelludo a un ritmo de 50–100 pelos por día.

Etapas del crecimiento del cabello — Las 3 etapas del crecimiento del cabello:
La anágena representa los períodos de crecimiento activo; el 90% de todos los folículos pilosos se encuentran en la fase anágena. La catágena representa los períodos de degeneración y regresión del folículo piloso; < El 1% de todos los folículos pilosos se encuentran en la fase catágena. La telógena representa los períodos de descanso; < El 10% de todos los folículos pilosos se encuentran en la fase telógena. Tras la fase telógena, el cabello se cae de forma natural.
Imagen por Lecturio.

Clasificación o tipos de alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia

Las clasificaciones más comunes de la pérdida de cabello son la alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia cicatricial, la alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia no cicatricial y los LOS Neisseria trastornos capilares estructurales.

Cicatricial:

El folículo piloso sufre un daño irreversible, que se cura a través de la fibrosis Fibrosis Any pathological condition where fibrous connective tissue invades any organ, usually as a consequence of inflammation or other injury. Bronchiolitis Obliterans, lo que lleva a un cese del ciclo del cabello y a la pérdida permanente del mismo.

Secundaria: causada por una inflamación debida a un traumatismo físico o a una afección que no es una enfermedad primaria del cuero cabelludo (incluye tinea capitis Tinea capitis Ringworm of the scalp and associated hair mainly caused by species of Microsporum; Trichophyton; and Epidermophyton, which may occasionally involve the eyebrows and eyelashes. Dermatophytes/Tinea Infections, neoplasias, radioterapia y cicatrices quirúrgicas)
Primaria: causada por trastornos inflamatorios del cuero cabelludo en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum los LOS Neisseria que el folículo piloso es el objetivo principal de la destrucción, lo que provoca la pérdida permanente del cabello (dividida en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum 3 subtipos: linfocítica, neutrofílica y mixta)

Tabla: Subtipos de alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia cicatricial primaria
Linfocítica	Neutrofílica	Mixta
Alopecia mucinosa Alopecia Mucinosa A disease of the pilosebaceous unit, presenting clinically as grouped follicular papules or plaques with associated hair loss. It is caused by mucinous infiltration of tissues, and usually involving the scalp, face, and neck. It may be primary (idiopathic) or secondary to mycosis fungoides or reticulosis. Alopecia Alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia cicatricial centrífuga central Lupus eritematoso discoide Queratosis folicular espinosa decalvante Liquen plano pilar Alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia frontal Frontal The bone that forms the frontal aspect of the skull. Its flat part forms the forehead, articulating inferiorly with the nasal bone and the cheek bone on each side of the face. Skull: Anatomy fibrosante	Celulitis disecante del cuero cabelludo Foliculitis decalvante	Acné keloidalis nuchae Acné necrótico Dermatosis pustulosa erosiva del cuero cabelludo

No cicatricial:

La inflamación es leve o inexistente, por lo que el folículo piloso no está dañado, lo que da lugar a una pérdida no permanente de cabello (dividida en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum 3 subtipos: focal, con patrón y difusa).

Tabla: Subtipos de alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia no cicatricial
Focal	Con Patrón	Difusa
Alopecia areata Alopecia Areata Loss of scalp and body hair involving microscopically inflammatory patchy areas. Alopecia Alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia sifilítica Alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia inducida por presión (postoperatoria) Alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia temporal triangular Alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia por tracción	Alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia androgénica en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum los LOS Neisseria hombres (pérdida de cabello de patrón masculino) Pérdida de cabello con patrón femenino Tricotilomanía	Efluvio anágeno Síndrome del anágeno suelto Efluvio telógeno

Trastornos estructurales del cabello:

Los LOS Neisseria trastornos capilares estructurales son alteraciones hereditarias o adquiridas de la estructura del cabello que dan lugar a un cabello frágil o quebradizo, lo que provoca la rotura del cabello o la aparición de fallos en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum su crecimiento.

**Tabla: Trastornos estructurales del cabello**
Heredados	Adquiridos
Enfermedad de Menkes Monilethrix Monilethrix Rare autosomal dominant disorder of the hair shaft. The clinical features of the disease include hypotrichosis, dry, and/or brittle hair, with varying degrees of alopecia. Mutations in the hair-specific keratin genes krthb1, krthb3, or krthb6 are associated with monilethrix. Autosomal recessive monilethrix with limited hypotrichosis are also known. Mutations in dsg4, liph, and p2ry5 protein genes are associated with the recessive form of monilethrix. Alopecia Tricotiodistrofia Tricorrexis invaginata	Tricorrexis nodosa Tricoptilosis

Diagnóstico

Antecedentes:

Es importante determinar la duración , tasa de progresión, ubicación, patrón y extensión de la pérdida de cabello junto con los LOS Neisseria síntomas asociados del paciente, trastornos/eventos médicos, antecedentes familiares de pérdida de cabello, medicamentos y dieta/ingesta calórica.
Medicamentos asociados a la caída del cabello:
- Amantadina
- Amiodarona
- Isotretinoína
- Anticoagulantes
- Ketoconazol
- Anticonvulsivos
- Litio
- Captopril Captopril A potent and specific inhibitor of peptidyl-dipeptidase a. It blocks the conversion of angiotensin I to angiotensin II, a vasoconstrictor and important regulator of arterial blood pressure. Captopril acts to suppress the renin-angiotensin system and inhibits pressure responses to exogenous angiotensin. Hypertension Drugs
- Penicilamina
- Estatinas
- Propranolol Propranolol A widely used non-cardioselective beta-adrenergic antagonist. Propranolol has been used for myocardial infarction; arrhythmia; angina pectoris; hypertension; hyperthyroidism; migraine; pheochromocytoma; and anxiety but adverse effects instigate replacement by newer drugs. Antiadrenergic Drugs
- Cimetidina
- Colchicina
Afecciones médicas asociadas a la caída del cabello:
- Enfermedad grave, cirugía y/o estrés psicológico
- Pérdida de peso significativa
- Deficiencia crónica de hierro
- Trastornos de la tiroides
- Parto
- Intoxicación por arsénico, mercurio o talio

Examen físico:

Inspección visual:
- Presencia o ausencia de ostia folicular (ausencia = alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia cicatricial)
- Distribución y densidad del cabello
- Patrón de pérdida de cabello
- Uso de papel de color contrastado para visualizar completamente el cabello
- Examinar otros lugares del cabello, además de las uñas, la piel y los LOS Neisseria dientes
Tricroscopia: dermatoscopia del cabello y del cuero cabelludo, que permite visualizar mejor la epidermis Epidermis The external, nonvascular layer of the skin. It is made up, from within outward, of five layers of epithelium: (1) basal layer (stratum basale epidermidis); (2) spinous layer (stratum spinosum epidermidis); (3) granular layer (stratum granulosum epidermidis); (4) clear layer (stratum lucidum epidermidis); and (5) horny layer (stratum corneum epidermidis). Skin: Structure and Functions, ostia foliculares, tallos del cabello, escamas,eritema y vasos sanguíneos
Prueba del tirón del cabello: identifica la pérdida activa del cabello agarrando y tirando ligeramente de 50-60 fibras capilares, la extracción fácil de > 6 fibras capilares sugiere una pérdida activa del cabello

Normal scalp — Tricoscopia del cuero cabelludo normal:
Se pueden ver múltiples fibras capilares que emergen de un único infundíbulo.
Imagen: “Figure 4” por Rodney Sinclair et al. Licencia: CC BY 4.0

Scalp with androgenic alopecia — Tricoscopia del cuero cabelludo normal:
Se pueden ver múltiples fibras capilares que emergen de un único infundíbulo.
Imagen: “Figure 4” por Rodney Sinclair et al. Licencia: CC BY 4.0

Pruebas adicionales:

Microscopía: evaluación microscópica de las puntas de los LOS Neisseria pelos proximales, lo que es útil para determinar la fase de desprendimiento del pelo
Biopsia del cuero cabelludo: se utiliza en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum las formas de alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia cicatricial para distinguir las causas inflamatorias de las no inflamatorias
Tricogramas y fototricogramas: utilizados para evaluar la pérdida de cabello no cicatricial y la respuesta al AL Amyloidosis tratamiento
Laboratorio:
- Hormona estimulante de la tiroides (TSH, por sus siglas en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum inglés) para evaluar los LOS Neisseria trastornos tiroideos
- Hierro y ferritina en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum suero para evaluar la deficiencia de hierro
- Prueba de reagina plasmática rápida para evaluar por sífilis

Alopecia Androgénica

Definición

La alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia androgénica es un tipo hereditario de pérdida de cabello que está mediada por la presencia del andrógeno dihidrotestosterona ( DHT DHT A potent androgenic metabolite of testosterone. It is produced by the action of the enzyme 3-oxo-5-alpha-steroid 4-dehydrogenase. Gonadal Hormones) y es el tipo más común de alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia.

Pérdida de cabello con patrón masculino

Epidemiología:
- Es la alopecia Alopecia Alopecia is the loss of hair in areas anywhere on the body where hair normally grows. Alopecia may be defined as scarring or non-scarring, localized or diffuse, congenital or acquired, reversible or permanent, or confined to the scalp or universal; however, alopecia is usually classified using the 1st 3 factors. Alopecia más común en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum los LOS Neisseria hombres
- La prevalencia aumenta con la edad.
- Afecta al AL Amyloidosis 80% de los LOS Neisseria hombres a los LOS Neisseria 80 años
- Prevalencia menor en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum chinos, asiáticos y afroamericanos que en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum caucásicos
Etiología:
- Predisposición genética (rasgo dependiente de los LOS Neisseria andrógenos)
- Relacionado con el cromosoma X
Fisiopatología:
1. La testosterona es convertida en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum DHT DHT A potent androgenic metabolite of testosterone. It is produced by the action of the enzyme 3-oxo-5-alpha-steroid 4-dehydrogenase. Gonadal Hormones por la 5-alfa-reductasa.
2. La DHT DHT A potent androgenic metabolite of testosterone. It is produced by the action of the enzyme 3-oxo-5-alpha-steroid 4-dehydrogenase. Gonadal Hormones se une al AL Amyloidosis receptor Receptor Receptors are proteins located either on the surface of or within a cell that can bind to signaling molecules known as ligands (e.g., hormones) and cause some type of response within the cell. Receptors de andrógenos en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum los LOS Neisseria folículos pilosos y activa los LOS Neisseria genes Genes A category of nucleic acid sequences that function as units of heredity and which code for the basic instructions for the development, reproduction, and maintenance of organisms. DNA Types and Structure que acortan la fase anágena.
3. Conduce a la miniaturización folicular de los LOS Neisseria folículos pilosos del cuero cabelludo (una disminución progresiva de la relación entre los LOS Neisseria pelos terminales y los LOS Neisseria pelos vellosos más cortos y finos)
Presentación clínica:
- La caída del cabello puede comenzar en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum cualquier momento después de la pubertad (normalmente a finales de los LOS Neisseria 20 años) y progresa a lo largo de la vida del paciente.
- Retroceso de la línea media del cabello
- El vértice presenta un adelgazamiento/calvicie difusa con el pelo frontal Frontal The bone that forms the frontal aspect of the skull. Its flat part forms the forehead, articulating inferiorly with the nasal bone and the cheek bone on each side of the face. Skull: Anatomy intacto.
- Conservación de la densidad capilar en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum la región occipital Occipital Part of the back and base of the cranium that encloses the foramen magnum. Skull: Anatomy
- Reducción visible de la densidad capilar
Diagnóstico: basado en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum los LOS Neisseria antecedentes y el examen físico
Tratamiento:
- Terapia de 1ra línea:
  - Finasterida oral: Inhibidor de la 5-alfa-reductasa que inhibe la conversión de testosterona en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum DHT DHT A potent androgenic metabolite of testosterone. It is produced by the action of the enzyme 3-oxo-5-alpha-steroid 4-dehydrogenase. Gonadal Hormones e inhibe la miniaturización folicular
  - Minoxidil tópico: vasodilatador que aumenta la duración de la fase anágena, acortando la fase telógena y agrandando los LOS Neisseria folículos miniaturizados
- Otras opciones:
  - Cirugía de trasplante capilar
  - Terapia de luz láser de baja intensidad
  - Uso cosmético de pelucas o postizos

Pérdida de cabello con patrón femenino

Epidemiología:
- Una condición común que afecta al AL Amyloidosis 19% de las mujeres caucásicas
- Lo más común es que ocurra después de la menopausia
- La prevalencia aumenta con la edad, y ⅓ de las mujeres están afectadas a los LOS Neisseria 70 años.
Etiología:
- No se comprende completamente
- El exceso de andrógenos puede desempeñar un papel.
- Se sospecha de una predisposición genética.
Fisiopatología:
- Transformación del folículo piloso terminal en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum un folículo piloso velloso más delgado mediante la miniaturización folicular
- Acortamiento de la fase anágena y alargamiento de la fase telógena
Presentación Clínica:
- Adelgazamiento difuso del cabello
- La línea capilar frontal Frontal The bone that forms the frontal aspect of the skull. Its flat part forms the forehead, articulating inferiorly with the nasal bone and the cheek bone on each side of the face. Skull: Anatomy está adelgazada pero conservada.
- Ensanchamiento progresivo del cabello de la parte media que lleva al AL Amyloidosis adelgazamiento del cabello de la coronilla
- Conservación de la densidad capilar en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum la región occipital Occipital Part of the back and base of the cranium that encloses the foramen magnum. Skull: Anatomy
Diagnóstico:
- Basado en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum los LOS Neisseria antecedentes y el examen físico
- Laboratorio: El nivel de testosterona libre y total y el nivel de sulfato de dehidroepiandrosterona (DHEAS) pueden comprobar un estado hiperandrogénico subyacente.
Tratamiento:
- Tratamiento de 1ra línea: minoxidil tópico (vasodilatador que aumenta la duración de la fase anágena, acortando la telógena y agrandando los LOS Neisseria folículos miniaturizados)
- Tratamiento de 2da línea:
  - Espironolactona: antagonista de la aldosterona que inhibe competitivamente los LOS Neisseria receptores de andrógenos e inhibe la síntesis de andrógenos
  - Finasteride Finasteride An orally active 3-oxo-5-alpha-steroid 4-dehydrogenase inhibitor. It is used as a surgical alternative for treatment of benign prostatic hyperplasia. Androgens and Antiandrogens: inhibidor de la 5-alfa-reductasa que inhibe la conversión de testosterona a DHT DHT A potent androgenic metabolite of testosterone. It is produced by the action of the enzyme 3-oxo-5-alpha-steroid 4-dehydrogenase. Gonadal Hormones e inhibe la miniaturización folicular
- Otras opciones:
  - Uso de pelucas o camuflaje cosmético
  - Cirugía de trasplante capilar

Alopecia Areata

Definición

La alopecia areata Alopecia Areata Loss of scalp and body hair involving microscopically inflammatory patchy areas. Alopecia es un trastorno autoinmune crónico y recidivante en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum el que el sistema inmune del organismo se dirige a los LOS Neisseria folículos pilosos anágenos y provoca una caída no cicatricial del cabello.

Epidemiología

Se da en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum el 1% de la población
El riesgo a lo largo de la vida es de aproximadamente un 2%.
Ocurre en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum tasas similares en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum hombres y mujeres
La edad media de aparición es de aproximadamente 30 años.

Etiología

Enfermedad autoinmune, en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum la que los LOS Neisseria folículos pilosos son el objetivo y pasan prematuramente de la fase de crecimiento anágena a las fases catágena y telógena
La predisposición genética también influye.
Trastornos asociados:
- Otras enfermedades autoinmunes: vitíligo, lupus, psoriasis Psoriasis Psoriasis is a common T-cell-mediated inflammatory skin condition. The etiology is unknown, but is thought to be due to genetic inheritance and environmental triggers. There are 4 major subtypes, with the most common form being chronic plaque psoriasis. Psoriasis, esclerodermia, tiroiditis, enfermedad celíaca, dermatitis Dermatitis Any inflammation of the skin. Atopic Dermatitis (Eczema) atópica, rinitis alérgica
- Trastornos genéticos: Síndrome de Down
- Trastornos psicosociales: estrés, ansiedad, trastornos del estado de ánimo