There are more reasons for sudden pain in the hand, as follows: 1, cervical spondylosis: when the cervical nerve root is compressed, there will be radioactive pain in the upper limbs, and the pain can go all the way to the hand, for example, when twisting the head or squeezing above the head, can cause instant narrowing of the intervertebral foramen, which will squeeze the nerve root through the foramen, so there will be acute radioactive pain in the hand. 2, tenosynovitis of the fingers: often doing housework It can cause mutual friction between the tendon sheath and tendon, which can lead to aseptic inflammation of the tendon sheath and inflammation of the tendon, and therefore can manifest as pain at the tendon. 3. Acute arthritis attacks in the fingers: under the stimulation of cold wind and cold water, such as washing clothes with cold water, acute joint pain and swelling may occur afterwards.