Hello,
Well, with understanding your history I can understand that the doctor has diagnosed you with
polyneuropathy. So you are currently on the medications. Well, firstly to say, it's difficult to comment with just having a written history as in medical we need to even check for the clinical examination too. Reports can help us understand the patho-physiological pattern but the actual involvement of the dermatomes and myotomes are a bit difficult just with the words. Clinical examination can help reveal a lot of details.
Now coming to the point you have asked for. Well, I feel you have a disturbance in your spinal column and also there is muscular imbalance in your lower
limbs as well along with back. As you mentioned you are performing
yoga (well it's just a word used by you and yoga is a wide subject with what actual yoga-asanas you are doing and how accurate they are) - sorry but don't take me wrong here - As you mentioned you are performing yoga we need to know the muscle strength as you may have made the muscle more flexible.
Now understanding the physiology of human body, the human body muscles lose a number of muscle fibers as age progresses. So the stretched muscle will be more weaker but the joint will be more mobile. So to understand the actual biomechanics of the body we need a clinical examination and also a proper guidance. The medicine mentioned by your physician is fair enough.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Jay Indravadan Patel, Physical Therapist or Physiotherapist