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.
Barring neurological disorders such as Lou Gehrig's disease and Muscular Dystrophy, causes of muscle twitching were simple: caffeine, excessive exercise, stress, a diet deficiency. The former three I was willing to rule out in my situation, but it is possible that there has been a deficiency in my diet.