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 common, less serious causes of muscle twitching include: 1  exercise. 2  stress and anxiety. 3  caffeine and other stimulants. 4  nutritional deficiencies. 5  smoking. 6  irritation of the eyelids or surface of your eye. 7  reaction to drugs, such as corticosteroids, stimulants, and estrogen.hen a nerve is stimulated or damaged, it may cause your muscle fibers to twitch. Many twitches experienced in your body are common and may go unnoticed. However, other types of twitching may be a sign of a nervous system condition and should be checked out by your doctor.