genitalia (_herpes progenitalis_),
the lesions are commonly found on the prepuce (_herpes praeputialis_) in
the male, and on the labia minora and labia majora in the female.

#State the causes of herpes simplex.#

Herpes facialis is often observed in association with colds and febrile
and lung diseases. Malaria, digestive disturbance, and nervous disorders
are not infrequently predisposing factors. Herpes progenitalis is said
to occur more frequently in those who have previously had some venereal
disease, especially gonorrh[oe]a, but this is questionable. It is
probably often purely neurotic.

#What are the diagnostic points?#

The appearance of one or several vesicular groups or clusters about the
face, and especially about the lips, is usually sufficiently
characteristic. The same holds true ordinarily when the eruption is seen
on the prepuce or other parts of the genitalia; it is only when the
vesicles become rubbed or abraded and irritated that it might be
mistaken for a venereal sore, but the history, course and duration will
usually serve to differentiate.

#Give the prognosis.#

The eruption will usually disappear in several days or one or two weeks
without treatment. Remedial applications, however, exert a favorable
influence. Herpes progenitalis exhibits a strong disposition to
recurrence.

#What is the treatment of herpes facialis?#

Anointing the parts with camphorated cold cream, with spirits of camphor
or similar evaporating and stimulating applications will at times afford
relief to the burning, and shorten the course.

#What is the treatment of herpes progenitalis?#

In herpes about the genitalia cleanliness is of first importance. A
saturated solution of boric acid, a dusting-powder of calomel or oxide
of zinc, and the following lotion, containing calamine and oxide of
zinc, are valuable:--

[Rx] Zinci oxidi,
Calaminae, .......... [=a][=a] ........ gr. v
Glycerinae,
Alcoholis, ......... [=a][=a] ........ [minim]vj
Aquae, ................................ [Oz]j M.

In obstinate recurrent cases, frequent applications of a mild galvanic
current will have a favorable influence.

#Hydroa Vacciniforme.#
(_Synonyms:_ Recurrent Summer Eruption; Hydroa Puerorum; Hydroa
Aestivale.)

#Describe hydroa vacciniforme.#

It is a rare vesicular disease usually seen in boys (only two or t