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.