ease is
of specific and infectious character.

#Give the chief diagnostic features of herpes zoster.#

The prodromic neuralgic pain, the appearance of grouped vesicles upon
inflammatory bases following the course of a nerve tract, and the
limitation of the eruption to one side of the body.

#What is the prognosis?#

Favorable; the symptoms usually disappearing in two to four weeks. In
some instances, however, the neuralgic pains may be persistent, and in
zoster of the supra-orbital region the eye may suffer permanent damage.

#How would you treat herpes zoster?#

_Constitutional treatment_, usually tonic in character, is to be based
upon general principles; moderate doses of quinia, with one-sixth grain
of zinc phosphide, four or five times daily, appear in some cases to
have a special value. The accompanying neuralgic pain may be so intense
as to require anodynes. _Local treatment_ should be of a soothing and
protective character. A dusting-powder of oxide of zinc and starch (to
the ounce of which twenty to thirty grains of camphor may be added)
proves useful; and over this, in order that the parts be further
protected, a bandage or a layer of cotton batting. Oxide-of-zinc
ointment, and in those cases in which there is much pain, ointments
containing powdered opium or belladonna, or orthoform, may be used. A
mild galvanic current applied daily to the parts is often of great
advantage, both in its influence upon the course of the eruption and
upon the neuralgic pain. The plan, so often advised, of painting the
parts with flexible collodion is not to be commended.

#Dermatitis Herpetiformis.#
(_Synonyms:_ Hydroa Herpetiforme (Tilbury Fox); Herpes Gestationis
(Bulkley); Pemphigus Prurigiuosus; Duhring's Disease.)

#Give a definition of dermatitis herpetiformis.#

Dermatitis herpetiformis is a somewhat rare inflammatory disease,
characterized by an eruption of an erythematous, papular, vesicular,
pustular, bullous or mixed type, with a decided disposition toward
grouping, accompanied by itching and burning sensations, with, as a
rule, more or less consequent pigmentation, and pursuing usually a
chronic course with remissions.

#Describe the erythematous type of dermatitis herpetiformis.#

The character of the eruption in the erythematous type resembles closely
that of erythema multiforme and of urticaria, especially the former. The
efflorescences usually