Other types of inherited ichthyosis

Other inherited forms ofichthyosis are very rare and include:

• X-linked ichthyosis only affects males and includes general scaling, particularly over the limbs and trunk (torso)
• congenital ichthyosiform erythroderma
• harlequin ichthyosis thisis extremely rare, but the scaling is severe and requires intensive care at birth
• syndromes that include ichthyosis such as Netherton's syndrome or Sjgren-Larsson syndrome

Congenital ichthyosiform erythroderma

Ichthyosis may develop if a baby is born with a shiny yellow membrane (collodion membrane)that sheds within the first week of life.

Once the membrane has shed, one of the following types of ichthyosis can develop:

• non-bullous ichthyosiform erythroderma inflamedscaly skin that affects the entire skin surface
• bullousichthyosiform erythroderma inflamed scaly skin with fluid-filled blisters that may become infected andproduce a foul-smelling skin odour
• lamellar ichthyosis where the skin isn't as red, but the scales are larger and tighter to the skin

Insevere cases ofcongenital ichthyosiform erythrodermaa child may also have drooping lower eyelids (ectropion) , mild hair loss and tight skin on the fingers.