Signs of numbness in the left hand in the thirties may be caused by long-term compression, peripheral neuropathy, brain diseases, etc.
1. Long-term compression: long-term use of cell phones or arm bending, resulting in the arm to maintain the same position for a long time, or carpal tunnel syndrome caused by the transverse carpal ligament compression of the median nerve, which leads to numbness in the left hand.
2. Peripheral neuropathy: Viral infection, food and drug poisoning, malnutrition metabolic disease or cervical spondylosis compression may lead to peripheral neuropathy, resulting in numbness of the left hand.
3. Brain diseases: such as cerebral hemorrhage, cerebral infarction, etc. may lead to nerve function damage, thus leading to left hand numbness.
If you have numbness in your left hand in your thirties, you should seek medical treatment in time.