314 ENDOCRINE GLANDS 



4. The sudorific disturbances of the same diseases. 



5. Pains caused by alterations of the periarterial 

 sympathetic plexus. 



6. Pilo motor disturbances of nervous lesions. 



7. Cutaneous pigmentations occurring during preg- 

 nancy , peritonitis, tuberculosis, enteritis and certain pan- 

 creatic affections. 



All these pigmentations are due to irritation of the 

 sympathetic. 



In the field of mental pathology the sympathetic by its 

 lesions causes disturbances in the circulation of the brain or 

 changes in visceral sensations. Vigouroux and Laignel- 

 Lavastine have shown, for instance, that certain sensations 

 such as a feeling of narrowing of the stomach, oesophagus, 

 etc., found in certain insane individuals were due to chronic 

 lesions of the semi lunar ganglia. 



DIVISIONS OF THE PATHOLOGY OF THE SYMPATHETIC. 



We will study the pathology of this system according 

 to the following artificial classifications : 



1. The hyperexcitability syndrome of the vegetative 

 nervous system. Sympathicotonia and parasympathi- 

 cotonia (sometimes still called vagotonia). 



2. The reactions of the vegetative nervous systems in 

 the course of various diseases. 



3. The sympathetic syndromes in their relationship to 

 affections of the endocrine glands or endocrine sympa- 

 thetic syndrome. 



This chapter can be considered as a general pathology of 

 the sympathetic, considered as a nerve-regulating vege- 

 tative life. 



4. Localized sympathetic syndromes. 



(a) Of the cervical sympathetic; 



(6) Of the mediastinal sympathetic; 



