Numbness in the hands after stress is usually caused by excessive stress, but it can also be caused by disease. First of all, when people are overstressed, emotional excitement will occur hyperventilation, resulting in excessive exhalation of carbon dioxide, the body appears respiratory alkalosis, thus causing the symptoms of hand numbness. Secondly, some diseases can also cause hand numbness, such as cervical spondylosis, which can compress the nerve vessels, resulting in poor blood flow, resulting in arm numbness. In addition, trauma, rheumatism, carpal tunnel, repetitive work, obesity, etc., are also due to nerve compression, thus causing the hand numbness, and in daily life, personal mental and psychological factors can also cause the symptoms of arm numbness, such as excessive stress and tension, anxiety, can aggravate the symptoms, especially after tension and excitement, this symptom will be more obvious.