acute circumscribed [oe]dema treatment is essentially that of
urticaria, the diet being given special attention.

#What external applications would you advise for the relief of the
subjective symptoms?#

Cooling lotions of alcohol and water or vinegar and water; lotions of
carbolic acid, one to three drachms to the pint; of thymol, one-fourth
to one drachm to the pint of alcohol and water; of liquor carbonis
detergens, one to three ounces to the pint of water, or the following:--

[Rx] Acidi carbolici, ..................... [dram]j-[dram]iij
Acidi borici, ........................ [dram]iv
Glycerinae, ........................... f[dram]j
Alcoholis, ........................... f[Oz]ij
Aquae, ................................ f[Oz]xiv. M.

Alkaline baths are also useful, and may advantageously be followed by
dusting-powders of starch and zinc oxide.

#Urticaria Pigmentosa.#
(_Synonym:_ Xanthelasmoidea.)

#Describe urticaria pigmentosa.#

Urticaria pigmentosa is a rare disease, variously viewed as an unusual
form of urticaria and as an urticaria-like eruption in which there is an
element of new growth in the lesions. It begins usually in infancy or
early childhood and continues for months or years, and is characterized
by slightly, moderately, or intensely itchy, wheal-like elevations,
which are more or less persistent and leave yellowish, orange-colored,
greenish or brownish stains. Exceptionally subjective symptoms are
almost entirely absent. Anatomical studies show that the lesion has in
some respects the structure of an ordinary wheal, with [oe]dema and
pigment deposit in the epidermal portion, and cellular infiltration made
up principally of mast-cells.

[Illustration: Fig. 13.
Urticaria Pigmentosa.]

The nature of the disease is obscure and treatment unsatisfactory.
Ordinarily as early youth or adult life is reached it spontaneously
disappears. The treatment advised is usually on the same lines as that
of chronic urticaria.

#Dermatitis.#

#What is implied by the term dermatitis?#

Dermatitis, or inflammation of the skin, is a term employed to designate
those cases of cutaneous disturbance, usually acute in character, which
are due to the action of irritants.

#Mention some examples of cutaneous disturbance to which this term is
applied.#

The dermatic inflammation due to the action