Hi welcome to Health care magic forum. As you describe the numbness
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
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 .