Hi thanks for your query and welcome to lybrate. I am Dr. Akshay from fortis hospital, new delhi.
Your symptoms of numbness
could be due to long standing diabetes in your case although other causes cannot be ruled out especially issues in lower back region. I would advise you for a very strict sugar
control, you can take medications like pregabalin
in low doses initially, take vitamin b12 and adequate calcium and vitamin d supplementation.
Also heel pain
could be due to inflammation in your heel fascia.
Treatment modalities are aimed at relieving inflammation of the fascia, like ice packs, physical therapy, footwear modification and anti-inflammatory therapy. I will observe you with this management for around 2 weeks and then we will see if we require any investigations in your case. Do not hesitate to contact me if you need any further assistance.