re the symptoms excited by great
fear. Hence in hysteric diseases, when these symptoms occur, the fear,
which has been usually associated with them, recurs at the same time, as in
hypochondriasis, Class I. 2. 4. 10. See Sect. XVI. 8. 1.

The convulsions which sometimes attend the hysteric disease, are exertions
to relieve pain, either of some torpid, or of some retrograde organ; and in
this respect they resemble epileptic convulsions, except that they are
seldom so violent as entirely to produce insensibility to external stimuli;
for these weaker pains cease before the total exhaustion of sensorial power
is produced, and the patient sinks into imperfect syncope; whereas the true
epilepsy generally terminates in temporary apoplexy, with perfect
insensibility to external objects. These convulsions are less to be dreaded
than the epileptic ones, as they do not originate from so permanent a
cause.

The great discharge of pale urine in this disease is owing to the inverted
motions of the lymphatics, which arise about the neck of the bladder, as
described in Sect. XXIX. 4. 5. And the lymphatic salivation arises from the
inverted motions of the salivary lymphatics.

Hysteria is distinguished from hypochondriasis, as in the latter there are
no retrograde motions of the alimentary canal, but simply a debility or
inirritability of it, with distention and flatulency. It is distinguished
from apepsia and cardialgia by there being nothing ejected from the stomach
by the retrograde motions of it, or of the oesophagus.

M. M. Opium. Camphor. Assafoetida. Castor, with sinapisms externally; to
which must be added a clyster of cold water, or iced water; which,
according to Mons. Pomme, relieves these hysteric symptoms instantaneously
like a charm; which it may effect by checking the inverted motions of the
intestinal canal by the torpor occasioned by cold; or one end of the
intestinal canal may become strengthened, and regain its peristaltic motion
by reverse sympathy, when the other end is rendered torpid by ice-water.
(Pomme des Affections Vaporeuses, p. 25.) These remove the present
symptoms; and bark, steel, exercise, coldish bath, prevent their returns.
See Art. VI. 2. 1.

11. _Hydrophobia._ Dread of water occasioned by the bite of a mad dog, is a
violent inversion of the motions of the oesophagus on the contact or even
approach of water or other fluids. The pharinx seems to have acquired the
sensibility of the larinx in this di