Wat could it be? nausea, dizzy, faint feeling. arms get cold & tingly. heart rate is 40 44 but the male is athletic. er, 2 drs, &cardiologist said nothin

Several issues: This need not be just a cardiology problem. Have patient's own doctor check him for neck(spinal)problems, blood sugar problems, cortisol problems and peripheral neuropathy. Much more information is needed to reach a differential diagnosis.

Vasovagal: Could be vasovagal disease or neurocardiogenic dysfunction. It is diagnosed by tilt table testing. Go see an electro physiologist.