You can try to elicit the symptom to see if it is Tinel's sign.

Google link to images:

https://www.google.com/search?q=tine...HbTDARYQsAQIHw

You can use a wooden spoon handle or a similar thing. (doctor's have that little rubber hammer thing they use).
You tap the area near the zapping gently and see if it is a nerve thing. Gout makes crystals of uric acid in soft tissue, and the foot is a prime location due to poor circulation there. Pseudogout is calcium deposition.

Tinel's sign may come and go. I find that using the Morton's Epsom lotion, removes it for me in my hands. I tap about 2 inches away from my inner wrist to test whether I need the lotion on the inner wrist. Usually the lotion lasts a few days for me, to settle the nerve back down.

The Achille's tendon is a prime location for tendon sprains or other causes of tendonitis.