I had pinched ulnaris nerve in both elbows a few years ago. The symptoms were pretty much the same as you describe. It took two operations and more than a year to recover. The symptoms started to creep back this year, probably because I started to hit the keyboard more. Luckily I found a book about trigger points [1] and releasing the triceps trigger points, especially #3 removes the symptoms. The book is godsend; I've found help from it to so many other issues too.

[1] https://www.amazon.com/Trigger-Point-Therapy-Workbook-Self-T...

This book has been a godsend for my chronic pain problems, including, somewhat surprisingly, neurological stuff: https://www.amazon.com/Trigger-Point-Therapy-Workbook-Self-T... (I suggest looking up "whiplash" in the index.) As weird as it sounds, when I massage the muscles around my head and neck, I get noticeable cognitive changes in the minutes and days that follow.

I have this one: https://www.amazon.co.uk/Trigger-Point-Therapy-Workbook-Self...

ISBN 1608824942

I'll put in my constant plug for the Trigger Point Therapy Workbook: https://www.amazon.com/Trigger-Point-Therapy-Workbook-Self-T...

It was recommended to me by my PT when I had hand pain, and it's helped me not only with that but back pain, headaches, and plantar fasciitis. Probably a few more, too. If you ask me, it's the best $16 investment you can imagine.