Ichthyosis Vulgaris (IV)
Etiology: ADI. Filaggrin absent or reduced.
Character of scales: Asymptomatic (or mildly itchy)
fine scaling. Scales larger and conspicuous on shins.
Distribution: Extensors of limbs, lower back. Flexures spared.
Associated features: Keratosis pilaris, hyperlinear palms and soles, atopic diathesis.
Treatment: Hydration (by immersing in water) and immediate lubrication (petrolatum; urea+glycerine+water) of skin. Use keratolytic agents (hydroxy acids, propylene glycol, and salicylic acid) when severe.