the right half of the face became red for three
or four weeks, with a disturbance of the sensibility of this part,
including the right half of the mucosa of the mouth and the conjunctive
of the right eye. At the seventeenth year the patient began to have a
left-sided headache and increased sweating of the right half of the
body. In 1892 the periodically-appearing skin-affection became worse.
Instead of healing, the broken vessels became blackish and healed
slowly, leaving ulcers, granulations, and scars, and the gangrenous
tendency of the skin increased. Disturbance of the sight shortly
intervened, associated with aphonia. The sensibility of the whole body,
with the exception of the face, was greatly impaired, and there was
true gangrene of the corium. A younger sister of the patient was
similarly affected with symptoms of hysteria, hemianesthesia, etc.

Neuroses of the skin consist in augmentation of sensibility or
hyperesthesia and diminution of sensibility or anesthesia. There are
some curious old cases of loss of sensation. Ferdinandus mentions a
case of a young man of twenty-four who, after having been seized with
insensibility of the whole body with the exception of the head, was
cured by purgatives and other remedies. Bartholinus cites the case of a
young man who lost the senses of taste and feeling; and also the case
of a young girl who could permit the skin of her forehead to be pricked
and the skin of her neck to be burned without experiencing any pain. In
his "Surgery" Lamothe mentions a case of insensibility of the hands and
feet in consequence of a horse-kick in the head without the infliction
of any external wound. In the "Memoires de l'Academie des Sciences" for
the year 1743, we read an account of a soldier who, after having
accidentally lost all sensation in his left arm, continued to go
through the whole of the manual exercise with the same facility as
ever. It was also known that La Condamine was able to use his hands for
many years after they had lost their sensation. Rayer gives a case of
paralysis of the skin of the left side of the trunk without any
affection of the muscles, in a man of forty-three of apoplectic
constitution. The paralysis extended from the left mammary region to
the haunch, and from the vertebrae to the linea alba. Throughout this
whole extent the skin was insensible and could be pinched or even
punctured without the patient being aware that he was even touched. The
parts did no