autosomal recessive congenital ichthyosis 4B
Harlequin ichthyosis (HI) is the most severe variant of autosomal recessive congenital ichthyosis (ARCI). It is characterized at birth by the presence of large, thick, plate-like scales over the whole body associated with severe ectropion, eclabium, and flattened ears, that later develops into a severe scaling erythroderma.