I have tingling from my hands all the way up to my shoulders often. what causes this? i am 34. i notice it everytime i talk on the phone within 5 minutes because i have to switch hands all the time. when i have my hands anywhere above heart level. it do

Numbness : Numbness and tingling in the hands is a common sensation felt when there is sustained pressure on a nerve, for instance if you are holding the phone between your neck and your shoulder, you may be placing pressure on a nerve. This feeling is typically benign. However numbness and tingling can also be a sign of a more serious condition and can be accompanied by pain, itching, burning and muscle wasting. This can be a sign of nerve damage (resulting from trauma or infection), or peripheral neuropathy. Any persistent numbness and tingling needs to be assessed by a doctor.

Possible CT Syndrome: Your symptoms suggest likely ct syndrome if tingling starts from fingers and then radiates upwards but not involve neck. You need neurological evaluation and ncv and EMG test.