CLASS I. 3. t- 10. OF IRRITATION. 137 



phatic diabetes, are the moft common fymptoms of the hyfteric 

 difeafe ; to which fometimes is added the lymphatic falivation, 

 and fits of fyncope, or convulfion, with palpitation of the heart 

 (which probably confifts of retrograde motions of it), and a great 

 fear of dying. Which laft circumftance diftinguiihes thefe con. 

 vulfions from the epileptic ones with greater certainty than any 

 other fmgle fymptom. The pale copious urine, cold ikin, palpi- 

 tation, and trembling, are the fymptoms excited by great fear. 

 Hence in hyfteric difeafes, when thefe fymptoms occur, the fear, 

 which has been ufually aflbciated with them, recurs at the fame 

 time, as in hypochondriaiis, Clafs I. 2. 4. 10. See Sect. XVI. 

 8. i. 



The convulfions which fometimes attend the hyfteric difeafe, 

 are exertions to relieve pain, either of fome torpid, or of fome 

 retrograde organ , and in this refpect they refemble epileptic 

 convulfions, except that they are feldom ib violent as entirely to 

 produce infenfibility to external ftimuli ; for thefe weaker pains 

 ceafe before the total exhauftion of fenforial power is produced, 

 and the patient finks into imperfect fyncope ; whereas the true 

 epilepfy generally terminates in temporary apoplexy, with per- 

 fect infenfibility to external objects. Thefe convulfions are lets 

 to be dreaded than the epileptic ones, as they do not originate 

 from fo permanent a caufe. 



The great difcharge of pale urine in this difeafe is owing to 

 the inverted motions of the lymphatics, which arife about the 

 neck of the bladder, as defcribed in Sect. XXIX. 4. 5. And 

 the lymphatic falivation arifes from the inverted motions of the 

 falivary lymphatics. 



Hyfteria is diftinguifhed from hypochondriaiis, as in the latter 

 there are no retrograde motions of the alimentary canal, but lim- 

 ply a debility or inirritability of it, with diftendon and flatulency. 

 It is diftinguifhed from apepfia and cardialgia by there being noth- 

 ing ejected from the ftomach by the retrograde motions of it, 

 or of the cefophagus. 



M. M. Opium. Camphor. Aiafcetida. Caftor, with fin- 

 apifms externally ; to which muft be added a clyfter of cold wa- 

 ter, or iced water ; which, according to Monf. Pomme, relieves 

 thefe hyfteric fymptoms inftantaneoufly like a charm -, which it 

 may effect by checking the inverted motions of the inteftinal ca- 

 nal by the torpor occafioned by cold j or one end of the intefti- 

 nal canal may become ftrengthqned, and regain its periftaltic 

 motion by reverfe fympathy, when the other end is rendered 

 torpid by ice-water. (Pomme des Affections Vaporeufes, p. 25.) 

 Thefe remove the prefent fymptoms j and bark, fteel, exercife, 

 coldifh bath, prevent their returns. See Art. VI. 2. i . 



VOL. II. T ii. Hydnpkobia. 



