This could more commonly be attributed to Vit
B12 deficiency or Hypocalcemia secondary to Vit D3 deficiency, rather than high potassium.
You can go for a B12 and D3 test in the meantime.
Next Steps
Consult a General Physician for a proper neurological examination.
Health Tips
Such symptoms require proper evaluation. Attributing it to rare causes, by patient itself, is not advisable