Hi,
Thank you for posting your query.
I have noted your mother's symptoms. I would like to reassure you that there is no need to worry about this, as it is not suggestive of a serious condition.
There is no condition, where a sound can occur inside head, which can be heard from outside.
Mostly, it could be referred sound from throat or nose.
A good clinical examination by an ENT doctor and a
neurologist would be hlpful.
I hope my reply has helped you.
I would be pleased to answer, if you have any follow up queries or if you require any further information.
Best wishes,
Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad,
For DIRECT QUERY to me: http://bit.ly/Dr-Sudhir-kumar
My blog: http://bestneurodoctor.blogspot.com/