reasons for headaches          
  
  
                                          
       [pain, injection, autonomy]        
                                          
                        
                           
                               
                                
                       
                                
                                      
                                     
                                    
                                     
 really  only one  reason:  something  is 
 forcing itself  into  your head, whether 
 it's grown  there,  slithering  up  from 
 your    abdomen,    or     trying     to 
 telepathically  insert  itself  in  your 
             unconsciousness.