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.
The nicotine found in cigarettes and other tobacco products can cause muscle twitching, especially in the legs. Muscle spasms can occur in the eyelid or the area around the eye when the eyelid or the surface of the eye is irritated. Adverse reactions to certain drugs, including corticosteroids and estrogen pills, can trigger muscle spasms. The twitching may affect the hands, arms, or legs.