I am getting extreme tingling in hands and feet... what is this from?

Tingling in hands and feet can indicate poor blood flow or neurological disturbances. You will need to be examined in person by your Dr, and potentially have imaging or blood tests. Obesity, spinal nerve impingement, Diabetes, MS, and other causes are possible.

Not feasible to be precise, based on brief statement, but consider: if intermittent, might involve hyperventilation, and changes in ionized calcium levels; if constant, consider a peripheral neuropathy. An examination from your regular doctor might uncover some potential answers, and an appropriate specialty referral may provide stabilization.