Hi welcome to Health care magic forum. As you describe the
numbness and
tingling of the fingers it appears to be due to peripheralneuritis, due either to defeciency of b complex, or
hypertension , or diabetis, it may be due to
cervical spondylosis also.
As it is occuring even when you are not using the medicines also we can say it is not due to drugs or interactions.
I advise you to consult a physician for diagnosis and treatment, you may need to get the tests C.T.scan of the neck, besides other routine tests for confermation.
Besides i advise you to follow some diet recommendations as take more of green leafy vegetables, pulses, sprouts , fruits, juices and non vegetarian foods to provide body with iron,
proteins, and essential elements necessory for building up
nervous tissue , blood, and other tissues.
Wishing for a quick recovery and thanks for calling .