Thanks for your query
The pattern of symptoms your mother has suggest either peripheral neuropathy
that is affection of the nerves of the legs or remote possibility of spinal cord
problem. The investigations which mainly would help are
1. nerve conduction studies of the upper and lower limbs
2. Vitamin B 12 and Vitamin D levels
3. If indicated Protein electrophoresis
4. Urine BJ Proteins
, RA Factor and CRP
Before all these she needs proper assessment by a neurologist
. Thus i Suggest book an appointment with neurologist at VIZAG at earliest.
Depending upon these test treatment for general symptomatic relief as well as for treatment of underlying condition can be planned.