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 associated with trigger finger include a tender bump under the palm crease at the base of the finger, swelling and stiffness and pain in the middle joint of the finger. Instead of a smooth gliding finger, the digit will hesitate, click or snap during bending or straightening. What causes trigger finger? The exact cause of trigger finger is unknown, but it is generally seen more in women and those working in jobs requiring repetitive gripping. Sometimes, underlying illnesses that cause inflammation such as arthritis, gout, diabetes and auto-immune disease, can cause trigger finger.