- Nonbullous congenital ichthyosiform erythroderma (chronic, multifactorial, hyperkeratotic, inflammatory skin disease) Clinical criteria includes: - generalized involvement with no flexural sparing - congenital onset usually as collodion baby (i.e., a taut, shiny encasement which is shed postnatally revealing underlying erythroderma and generalized ichthyosis) - scales should be fine, whitish, and rather loose except on the lower legs where the scales may be large, platelike, and dark - if severely effected: intense erythema is present; overt ectropion may be present; cicatricial alopecia may be present; and secondary nail dystrophies with thickening of nail plate and ridging may be present