Numbness usually arises from damage or disease of nerves.
Numbness is a symptom & not a disease.I
It can be due to following diseases-
Stroke & ischaemic attack are stress related.
So I advice you to don't take it lightly & go for a complete medical checkup to know the underlying disease & treatment accordingly.
The following tips will help you greatly:
1.Exercise to maintain muscle tone.
2.Attend a group support to diminish depression and other negative feelings.
3.Rest and practice a relaxation technique for improved energy level.
4.Avoid temperature extremes.
5. Meditation, massage & relaxing therapy will relieve the stress & improve blood circulation.
Source- Medline Plus Encyclopedia.
Numbness in fingers is due to any of the above mentioned causes,as the numbness has been caused by dysfunction of nerves. . Get investigated by Physicain soon.