advice needed please

Hi all. Just wanted to pick your brains! I After nearly 12 months of feeling weary, neuralgia pain, pins and needles/numbness in hands, back and sciatic pain in leg foot, numb patch on other foot, all of a sudden I have started to feel much better. . I am undiagnosed and am on a pretty high dose of gabapentin which could explain the ease in sensory problems, but its not like I woke up one day and thought, I won’t feel weary to the point of exhaustion today, or suddenly be able to find my words or remember what I needed from one side of the room to the other! Its just like I have more physical stamina from nowhere.

I feel lucky. What I wanted to know is, have any of you experienced periods like this this prior to being diagnosed?

Thankyou and hope you are all keeping well.