You may use a certificate of citizenship or a naturalization certificate, to prove that you are a US citizen. But both the documents are not the same. A US citizenship certificate is granted to a person who acquires or derives citizenship from his US citizen parents.
Causes Of Twitching Of Fingers And Thumb. 1  Carpel tunnel syndrome causes twitching of muscles as the median nerve through the carpel tunnel becomes compressed. 2  A less disconcerting cause is muscle cramps that happen when small muscles in the hand contract.
Multiple sclerosis is a disease of the central nervous system that affects muscle coordination and can lead to finger spasms. A muscular disease called Myopathy is the weakening of the muscles that may include the fingers. Overconsumption, or withdrawal, of caffeine can cause the muscles to twitch. Excessive exercise can take its toll on the muscles of the fingers, causing pain and twitching.