hree
exceptions), occurring upon uncovered parts, especially the nose,
cheeks, and ears. The lesions begin as red spots, discrete or in groups,
rapidly exhibit vesiculation, and later umbilication; the contents
become milky, dry to crusts, which fall off and leave small pit-like
scars. Fresh outbreaks may take place almost continuously, and the
process go on indefinitely, at least up to youth or manhood, when the
tendency subsides. Its activity is usually limited to the warm season.
Arthritic symptoms and general disturbance are sometimes noted in severe
cases.

It is doubtless a vasomotor neurosis. Exposure to sun and wind is an
important, if not essential, etiological factor. Primarily the lesion
begins in the rete middle layers, and is purely vesicular in character;
later, necrosis of the rete and extending deep in the corium is
observed.

Treatment so far has only been palliative, consisting of the
applications employed in similar conditions. Constitutional medication
is based upon general principles. The patient should avoid exposure to
the sun, strong wind and excessive artificial heat.

#Epidermolysis Bullosa.#

#Describe epidermolysis bullosa.#

This is a rare, usually hereditary, disease or condition, characterized
by the formation of vesicles and blebs on any part subjected to slight
rubbing or irritation. No scarring is left, and no pigmentation noted.
The predisposition to these lesions persists indefinitely. The general
health is not involved. The nature of the disease is obscure.

Treatment has no influence in modifying or lessening this tendency. The
vulnerable parts should so far as possible be protected from knocks and
undue friction.

#Dermatitis Repens.#

#What do you understand by dermatitis repens?#

It is a rare spreading dermatitis starting from an injury, extending by
a serous undermining of the epidermis, and usually occurring upon the
upper extremities.

It usually begins shortly after an injury, and, as a rule, presents
itself by redness and serous exudation. The overlying epidermis breaks,
and the area of disease gradually progresses by an extension of the
serous undermining process, the denuded part looking red and raw, with
usually an oozing surface. As the disease spreads the oldest part
becomes dry and heals, the new epidermal covering being thin and
atrophic in appearance. Its most usual beginning is on some part of