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.
Symptoms: Left pointer finger twitching. Muscle Pain. Doctor : Hello Thank you posting your query on âAsk the Doctorâ Twitching of muscles of index finger may be due to benign muscular spasms, muscle weakness or electrolyte imbalance in muscle. Most of the times it is self limiting and nothing much is required to do.