It can occur in a number of situations which include: * Amniotic band syndrome, particularly if unilateral *Cornelia de Lange syndrome * Fetal hydantoin syndrome * Incontinentia pigmenti
Acheiria
Allochiria
Rhinitis medicamentosa
Trichophagia
Stomatitis nicotina
Fusarium
Lacnunga
Foot-and-mouth disease