Did you notice the numbness and/or tingling after sitting in one position for a long time,or on waking from a deep sleep?
Stretching it,or temporararily cutting off its blood supply,is often the cause of these sensations.Feeling should return to normal in a few minutes.
But only if your hands affected again and again and you feel stiffness in your neck it may be due to Cervical osteoarthritis.
and If the numbness and tingling affect only one side of your body and you feel blurred vision,cofusion,difficulty in speaking,loss of movement in your arms or legs.Consult your doctor without delay.It may be transient ischemic attack.
and if your fingers or toes go numb and bluish in cold weather,becoming red and painful as feeling returns.
It is Ranaud’s Syndrome,
In which the small blood vessels in fingers and toes become extra sensetive to to low temperatures,and suddenly contract reducing the flow of blood to the affected areas.is likely cause of this.The condition may occur in people already suffering from poor circulation or in those taking beta blocker drugs.