Is it cancer to suddenly twitch when fast asleep

There are many types of cancer, some types of cancer may cause low calcium, or some convulsions and other reactions, but such as sudden convulsions when falling asleep, this symptom cannot be used to diagnose cancer or what kind of cancer. This may be a low calcium reaction, not necessarily cancer, need further examination, and combined with the patient has some other clinical manifestations. For cancer, there may be local mass formation, and there may be gradually growing masses, causing obstruction, bleeding, infection and other manifestations. Cancer needs to obtain a clear pathology to be diagnosed, and then surgery and chemotherapy are mainly used.