Información de la revista
Vol. 109. Núm. 5.
Páginas 446 (junio 2018)
Vol. 109. Núm. 5.
Páginas 446 (junio 2018)
Images in Dermatology
Acceso a texto completo
Type B Pigmentary Demarcation Lines in Pregnancy
Líneas de demarcación pigmentarias tipo B en gestante
Visitas
11542
J.F. Mir-Bonafé
Autor para correspondencia
jmirb@santpau.cat

Corresponding author.
, S. Planas-Ciudad, E. Rozas-Muñoz, L. Puig
Servicio de Dermatología, Hospital de la Sant Creu i Sant Pau, Barcelona, Spain
Este artículo ha recibido
Información del artículo
Texto completo
Descargar PDF
Estadísticas
Figuras (1)
Texto completo

A 35-year-old woman from Bolivia was in the 37th week of a complication-free second pregnancy. She presented with asymptomatic diffuse areas of hyperpigmentation that had appeared progressively on the lateral and posterior aspects of her thighs and legs to form 2 abrupt, totally symmetric lines on the medial portion of both extremities. The lines formed a clear boundary between the hyperpigmented and normal skin (Fig. 1). Of note also was the presence of the linea alba and acanthosis nigricans. The findings led to a diagnosis of type B pigmentary demarcation lines associated with pigmentary changes in pregnancy.

Figure 1
(0.07MB).

Pigmentary demarcation lines are abrupt transition lines that separate areas of hyperpigmentation from areas of normal skin. They were described by Matsumoto in 1913. Their etiology and pathogenesis are unknown, but their distribution appears to follow Voigt lines and could correspond to differences in melanocyte distribution, probably influenced by genetic and hormonal factors. There are 8 subtypes of pigmentary demarcation lines but the most common ones are type B lines associated with pregnancy. They are mostly found in patients with high Fitzpatrick skin types and they affect the lower extremities. Diagnosis is clinical and the lines typically appear during the third trimester and disappear postpartum.

Please cite this article as: Mir-Bonafé JF, Planas-Ciudad S, Rozas-Muñoz E, Puig L. Líneas de demarcación pigmentarias tipo B en gestante. Actas Dermosifiliogr. 2018;109:446.

Descargar PDF
Idiomas
Actas Dermo-Sifiliográficas
Opciones de artículo
Herramientas
es en

¿Es usted profesional sanitario apto para prescribir o dispensar medicamentos?

Are you a health professional able to prescribe or dispense drugs?