Hello!
Thanks for being with us.
Heaviness in both lower
limbs,difficulty in walking and imbalance cab be seen in :
1.parkinson's disease,
2.parkinson's plus syndrome,
3.multi-infarct state and
4.
posterior circulation stroke.
5.Diseases of crerebellum and
spinal cord.
These diseases are common at this age of 76.
Hence cause for such symptoms is probably neurological.
If he would have been suffering from
vertigo only then ENT treatment might have helped as vertigo can occur due to internal ear disease.But there is no improvement after his treatment,hence he should undergo testing for the neurological diseases as mentioned above.
What he needs now is MRI BRAIN and
neurologist opinion for further management.
Hope i could help you better.
If any more queries,you can write to us.
Wish you good health.