What causes numbness in my fingers with tingling?

Most likeley two. Things: pressure on the nerve from the neck down or neuropathy (inflammations of the nerves).
Many possibilities. Numbness can occur from various reasons. Some potential causes include vitamin deficiency, nerve damage, nerve compression, alcohol over consumption, side effects of different medications, or as a result of different systemic medical conditions such as diabetes. Get evaluated by a professional to determine the diagnosis. Treatment is based on the diagnosis.

Related Questions

What could be causing finger numbness and tingling?

See your doctor. This is one of those problems where a visit to your doctor is necessary to figure out what's going on. Only after a thorough evaluation, including examination and possibly labs and other tests, can your doctor correctly diagnose you and treat you effectively. Read more...
Many causes. There are many causes. From carpal tunnel, to cubital tunnel to cervical disc disease, diabetes, hypothyroidism, perineural tumor (cyst), severe tendinitis causing local nerve compression, ms and late pregnancy to name a 'handful.' . If only some versus all of the digits are involved and a good medical history is taken, the differential diagnosis can be narrowed down. Read more...
nerve compression. The most common cause of numbness and tingling in hands in otherwise healthy individuals is nerve compression. The most common type of nerve compression is carpal tunnel syndrome. That being said there are a number of other causes as mentioned by by colleague. I recommend that you consult an experienced hand surgeon for further evaluation. Read more...