[Harlequin ichthyosis--medical and psychosocial challenges].

Harlequin ichthyosis is the most severe congenital keratinizing disorder. It is caused by mutations in the ABCA12 gene leading to defective lipid transport. The infants are born with ectropion, eclabium and fissured plate-like skin. Today these infants can survive with neonatal intensive care and retinoid therapy and need long-term interdisciplinary treatment in order to improve quality of life. However, the outcome in our case is impaired by severe psychomotor developmental delay, which has not yet been associated with Harlequin Ichthyosis.