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.
Brain and nervous system disorders that can cause eye twitching include: 1  Bell's palsy. 2  Cervical dystonia. 3  Dystonia. 4  Multiple sclerosis. 5  Oromandibular dystonia and facial dystonia. 6  Tourette syndrome.