KINETIC DISEASES 239 



of the mangled form. The sight was all the stimulus 

 needed to bring an instant return of the familiar 

 symptoms. Within a few minutes, she experienced 

 again the pressure in the head, the headache, the 

 numbness, the coldness and tingling of the feet all 

 the symptoms from which she had been nearly free for 

 eight months. The symptoms continued throughout 

 the day and passed away gradually. 



In all the kinetic diseases environmental stimuli 

 similar to those which caused or bore a part in the 

 causation of the disease tend to exaggerate or if 

 convalescence is well established to reproduce the 

 phenomena of the disease. For instance, in a patient 

 with cardiovascular disease any reference to business 

 perplexities a problem calling for close considera- 

 tion, a telegram asking for advice or decision upon a 

 proposed business move is sufficient to recall the 

 activating nod association, which was the original 

 source of the disease. The brain of the sufferer pre- 

 sents a low threshold to the specific adequate stimulus. 

 As the steady dropping of water upon the same spot on 

 the surface of the body by summation of stimuli causes 

 gradually increasing pain until the state of exhaustion 

 is reached, so the continued activation of the kinetic 

 system by business cares, by professional burdens, by 

 chronic infection or by emotional strain leads to sum- 

 mation of stimuli and final breakdown. 



Note on Bright's Disease 



In the great strain laid upon the organs of reduction 

 and elimination by the excessive production of by- 

 products in emotional activation, physical exertion 



