ichthyosis sauroderma

So are the elbows and the knees; and similar portions of the thighs and the arms may be found affected with ichthyosis.

Ichthyosis simplex and ichthyosis hystrix, terms commonly employed to designate the mild and severe forms respectively.

How is ichthyosis to be distinguished from eczema, psoriasis, and other scaly inflammatory diseases?

In severe cases of ichthyosis hystrix it may be necessary, also, to employ caustics or the knife.