Tingling in my fingers?

More often now, about once a day my fingers start to tingle and feel like they are falling asleep. It makes it very hard to write. I'm really nervous, I'm only 18, I don't want this to be the start of something life threatening. It's hard to write and type, and the numbness/tingling stays for... show more More often now, about once a day my fingers start to tingle and feel like they are falling asleep. It makes it very hard to write. I'm really nervous, I'm only 18, I don't want this to be the start of something life threatening. It's hard to write and type, and the numbness/tingling stays for several hours.

Does anyone else have this problem? What's wrong with me?
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