What to do about tingling hands and feet?

Find cause: Need to have some basic labs including glucose, B12 level etc to find a cause for this.

Paresthesias: Although not feasible to provide a precise answer, would consider a need to evaluate you many issues. You could have these symptoms secondary to hyperventilation, or acid-base balance abnormalities. This could be a sign of emerging peripheral neuropathy. Best way to pin down, see your doctor, get fully examined and complete appropriate testing.

Feet and hands tingl: You may be having issues with severe anxiety that can be successfully treated with medication. I would advise you to consult your local family doctor and seek their assistance in diagnosis.