abnormal acuteness of hearing due to increased irritability of the sensory neural mechanism; characterized by intolerance for ordinary sound levels 
                                                            
                                                     
                        
                                                
                        
                        
                            abnormally acute hearing due to heightened irritability of the sensory neural mechanism. return to Quick Directory
                                                            
                                                     
                        
                                                
                        
                        
                            A phenomenon where normal sounds are perceived to be abnormally loud, so much so that they are painful to listen to. Back to the Audiology Clinic main page
                                                            
                                                     
                        
                                                
                        
                        
                            An abnormal degree of discomfort or aversion to sounds that would not be regarded as loud by average standards.
                                                            
                                                     
                        
                                                
                        
                        
                            Abnormal acuteness of hearing or auditory sensation.
                                                            
                                                     
                        
                                                
                        
                        
                            Overarousal; hypersensitivity to sensory stimulation, especially sounds.
                                                            
                                                     
                        
                                                
                        
                        
                            Black's medical dictionary, G Macpherson ed; 38th ed An abnormally acute sense of hearing.
                                                            
                                                     
                        
                                                
                        
                        
                            Increased sensitivity to sound.
                                                            
                                                     
                        
                                                
                        
                        
                            Hyperacusis is a health condition characterized by an over-sensitivity to certain frequency ranges of sound (a collapsed tolerance to normal environmental sound).