The causes of frequent hand cramps and numbness may be due to incorrect sleeping posture, due to cold or overwork, etc. It may also be due to other diseases such as cervical spondylosis, calcium deficiency and cerebrovascular diseases.
1. Physiological reasons: during sleep, incorrect sleeping posture compresses the arm, resulting in poor blood circulation, which may lead to hand cramps and numbness; or the patient’s living environment is relatively cold, such as easy to be stimulated by cold water in work and life, or frequent use of the hand to cause strain, which may also lead to frequent cramps and numbness of the hand.
2. Pathologic causes:
(1) Cervical spondylosis: such as lumbar disc herniation and joint protrusion hyperplasia, which presses on the nerves, can lead to numbness and cramps in the limbs.
(2) Calcium deficiency: a lack of calcium increases neuromuscular excitability, which in turn leads to numbness and cramps.
(3) Cerebrovascular diseases: for example, transient ischemic attack and cerebral infarction, due to the obstacle of blood supply, numbness and cramps in the hands may occur.
It is recommended that patients exclude physiological causes, should promptly identify the cause of the disease, and actively treat the cause.