Thank you for the query.
The clicking sound you have mentioned is called as tinnitus
. There are so many causes which leads to tinnitus and especially in elderly like above 60 years there will be age related hearing loss
and it is due to presbycusis
. I advice you to consult ENT doctor so that they will rule out other causes also like blocked ear with wax,meniers diseases,bony changes,temporomandibular joint dysfunction and so many. Treatment is given accordingly based on the cause.Thank you.