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The most common causes of hand or finger cramps or spasms are muscle spasm, diabetes, and carpal tunnel syndrome.Other possible causes, such as multiple sclerosis, are more rare.ithin all the people who go to their doctor with hand or finger cramps or spasms, 47% report having hand or finger pain, 34% report having foot or toe cramps or spasms, and 34% report having leg cramps or spasms. 1  Hand or finger pain 47. 2  Foot or toe cramps or spasms strong predictor 34. 3  Headache 34.
Causes of Cramps in Hands and Fingers: Cramps are involuntary contractions of the muscles, which fail to relax immediately, resulting in severe pain. Skeletal muscle cramps are more common in the legs and calf muscles; however they can affect hands and other body parts.Here are a few reasons for causes of cramps in hands and fingers,1  Prolonged activities involving the hands and the fingers like typing, playing an instrument or doing needle work are associated with hand or finger cramps.reatment of Cramps in Hands and Fingers: 1  Prolonged and repetitive activities can result in stress, which in turn, can cause cramps. 2  Take a break every now and then to stretch the hands and shake them to avoid cramps. 3  Ensure that your diet is rich in green leafy vegetables and fruits, namely pineapple.