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.
Various conditions that affect the brain and central nervous system can also cause eye twitching, including stroke, dystonia, tardive (slow or belated onset) dyskinesia, Touretteâs syndrome, and Aicardi syndrome (rare organic brain disorder acquired in early childhood).