Brief Answer:
Can be due to nerve irritation.

Detailed Answer:
Hello,

Thanks for posting your query.

The slight finger twitching can be due to a nerve root compression or irritation at the level of cervical spine due to degenerative changes or due to Vitamin B12 deficiency or an electrolyte imbalance.
If it has been persistent or even increasing since few days, you need to visit your Orthopaedician. Depending upon the clinical findings they might ask you to get an x ray or MRI done, which shall help establish a diagnosis and in turn allow one to formulate a treatment plan.

Let me assure you that this is temporary and self limiting illness and usually the treatment goes in following lines: rest, lifestyle modifications (namely- avoiding pillow while sleeping, following a healthy diet plan, maintaining suitable posture while working on computer/driving, avoiding any activity that strikes neck discomfort), medications (that your physician prescribes) and most important physiotherapy ( in form of neck exercises, cervical traction if required along with local ultrasonics).

You can start with methylcobalamin - Vitamin B12 supplements in the meantime and see if it helps.

I hope this answers your query.

In case you have additional questions or doubts, you can forward them to me, and I shall be glad to help you out.
Wishing you good health.
Regards.
Dr. Praveen Tayal.
For future query, you can directly approach me through my profile URL http://bit.ly/Dr-Praveen-Tayal

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