My fingers feel numb. It comes like every few days. Sometimes one finger sometimes more. Ok both hands but not at the same time. What's wrong with me?

Numbness. This may be a type of peripheral neuropathy and some causes are vit B 12. Deficiency, certain malnutrition states, toxic chemicals , other neurological disorders. A neurologist is best qualified to evaluate and advise you, and any appropriate tests will be ordered. In the meantime make sure that your diet is healthy and take a mutivitamin.