Will it get better?
It depends entirely on the cause. B12 deficiency and thyroid disease can improve substantially if treated early. Diabetic neuropathy usually stabilises rather than reverses, and good glucose control slows it. Where no cause is found, it often progresses very slowly and many people remain stable for years.
Why do painkillers not help?
Because nerve pain does not respond to paracetamol or ibuprofen. It needs a different class — amitriptyline, duloxetine, gabapentin or pregabalin — which work on nerve signalling rather than inflammation.
What tests should I have?
At minimum HbA1c, B12 and folate, thyroid function, full blood count, kidney and liver function, inflammatory markers and coeliac serology. An incomplete panel is the commonest reason a treatable cause is missed.
Could it be my medication?
Possibly — and this is worth checking. Long-term nitrofurantoin, metronidazole, amiodarone, isoniazid, phenytoin and chemotherapy can all cause it. So can high-dose vitamin B6 supplements.
Why does it start in the feet?
Because the longest nerves are affected first, and the nerves to the feet are the longest in the body. It is also why it moves up the legs before reaching the hands.
Is it dangerous?
The numbness is more dangerous than the pain — you can burn or injure a foot without knowing. Daily foot checks and never using a hot water bottle on numb feet prevent most serious complications.
When is it an emergency?
Rapidly progressive weakness, especially spreading up from the legs, or anything affecting breathing or swallowing. That needs emergency assessment the same day.