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.
Peripheral neuropathy Peripheral neuropathy is a nerve condition of the extremities causing numbness, tingling, and pain. Finger injury Symptoms of finger injuries vary but can include pain, numbness, swelling, and deformity. Bruise or contusion Bruises, or contusions, cause skin discoloration, swelling and tenderness. Carpal tunnel syndrome Carpal tunnel syndrome symptoms include burning or tingling in the hand and fingers, numbness, pain and more.