This is exteremely common and is known as auditory hyperacuity. Provided your son is normal in all other respects and relates well to you,his siblings,other children and adults there is no need for concern.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.