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.
Causes of muscle twitching include: 1  Pregnancy. 2  Stress or anxiety. 3  Excessive caffeine. 4  Hypothyroidism. 5  Bug bites or stings. 6  Mono. 7  Parkinson's Disease. 8  Side-effects of certain drugs or medication (such as diuretics, corticosteroids, or estrogens).9  Dehydration.hese twitches often go unnoticed, and when you do feel them, they tend to feel worse and more noticeable than they actually are. Twitches, also known as fasciculations, can occur in the arms, feet, fingers, hands, head, legs, stomach, and other parts of the body.