Background: Harlequin ichthyosis (HI) is a severe and rare autosomal recessive congenital ichthyosis, characterized by hyperkeratosis, extensive fissuring massive, diamond-shaped scales which limit the child’s movements. The term harlequin comes from baby’s facial expression pattern of like 17th century entertainers, harlequins. underlying genetic abnormality has been identified as mutation in ...

Harlequin ichthyosis (HI) is a very rare severe form of autosomal recessive congenital ichthyosis, usually associated with stillbirth and early neonatal death. A newborn girl with HI is described. She presented in a critical condition with severe universalis hyperkeratosis, diffuse scales and deep erythematous fissures. She received preventive systemic antibiotics and hygienic nursing with skin...

Autosomal recessive congenital ichthyosis (ARCI) includes a wide range of ichthyosis phenotypes, including harlequin ichthyosis, lamellar ichthyosis (LI), congenital ichthyosiform erythroderma (CIE), and self-improving collodion ichthyosis (SICI) (1, 2). To date, 9 causative genes for ARCI have been identified (1, 2). ALOXE3 is a causative gene in LI as well as CIE, and it encodes the eLOX-3 li...

The term autosomal recessive congenital ichthyosis (ARCI) refers to a group of rare disorders of keratinization classified as nonsyndromic forms of ichthyosis. This group was traditionally divided into lamellar ichthyosis (LI) and congenital ichthyosiform erythroderma (CIE) but today it also includes harlequin ichthyosis, self-healing collodion baby, acral self-healing collodion baby, and bathi...

Congenital ichthyosis is often associated with typical neonatal phenotypes, "Collodion baby" and "Harlequin foetus", later transforming into severe lamellar or erythrodermic ichthyosis. However, in a minority of cases the skin condition will improve spontaneously after birth, although slight scaling, xerosis, hypohidrosis and keratoderma usually persist. Some of these patients will eventually b...