Related Experiment Video
Updated: May 7, 2026
A Novel Use of Three-dimensional High-frequency Ultrasonography for Early Pregnancy Characterization in the Mouse
Published on: October 24, 2017
Futcher lines: a case report in pregnancy and literature review
Jeremy W Peck1, Carrie A Cusack
1Department of Dermatology, 219 N Broad St, Philadelphia, PA 19107, USA. carriecusack@yahoo.com.
Pigmentary demarcation lines are common, especially in individuals with darker skin types. Type B pigmentary demarcation lines (Futcher lines) involve the posterior lower extremities and can be associated with pregnancy, often with spontaneous resolution after delivery. The pathogenesis of pigmentary demarcation lines remains unknown; however, neurogenic inflammation and/or mosaicism are thought to play a role in their development. We report a case of type B pigmentary demarcation lines in pregnancy and provide a review of the literature.
Pigmentary demarcation lines are common, especially in individuals with darker skin types. Type B pigmentary demarcation lines (Futcher lines) involve the posterior lower extremities and can be associated with pregnancy, often with spontaneous resolution after delivery. The pathogenesis of pigmentary demarcation lines remains unknown; however, neurogenic inflammation and/or mosaicism are thought to play a role in their development. We report a case of type B pigmentary demarcation lines in pregnancy and provide a review of the literature.