ase is variable, and relapses are common. It bears resemblance at
times to keratosis pilaris, ichthyosis, dermatitis exfoliativa; it is
considered identical with the lichen ruber acuminatus of Kaposi, and by
many also with the lichen ruber of Hebra. The etiology is obscure.

Treatment, both constitutional and local, is to be based upon general
principles; stimulating applications, with frequent baths, such as are
advised in psoriasis, are the most satisfactory. It is rebellious, and
not much more than palliation can be effected in some cases, in others
the outlook is more hopeful.

#Lichen Scrofulosus.#

#Describe lichen scrofulosus.#

Lichen scrofulosus is a chronic, inflammatory disease, characterized by
millet-seed-sized, rounded or flat, reddish or yellowish, more or less
grouped, desquamating papules. The lesions have their start about the
hair-follicles, occur usually upon the trunk, tend to group and form
patches, and sooner or later become covered with minute scales. As a
rule, there is no itching. It is a rare disease, and but seldom met with
in America; it is seen chiefly in children and young people of a
scrofulous diathesis. Scarring, slight in character, may or may not
follow.

#What is the treatment of lichen scrofulosus?#

The condition responds to tonics and anti-strumous remedies.

#Eczema.#
(_Synonym:_ Tetter; Salt Rheum.)

#What is eczema?#

An acute, subacute or chronic inflammatory disease, characterized in the
beginning by the appearance of erythema, papules, vesicles or pustules,
or a combination of these lesions, with a variable amount of
infiltration and thickening, terminating either in discharge with the
formation of crusts, in absorption, or in desquamation, and accompanied
by more or less intense itching and a feeling of heat or burning.

#What are the several primary types of eczema?#

Erythematous, papular, vesicular and pustular; all cases begin as one or
more of these types, but not infrequently lose these characters and
develop into the common clinical or secondary types--eczema rubrum and
eczema squamosum.

[Illustration: Fig. 20. Papular Eczema (leg).]

#What other types are met with clinically?#

Eczema rubrum, eczema squamosum, eczema fissum, eczema sclerosum and
eczema verrucosum. Eczema seborrhoicum is probably a closely allied
disease, occupying a middle position between or