Headache after dialysis is generally seen in the following two cases: First, dialysis dehydration is more, resulting in insufficient blood volume in the body, insufficient blood supply to the cerebral blood vessels can appear dizziness, headache, accompanied by a decrease in blood pressure, in this case, it is recommended to actively control the amount of water intake, hemodialysis process, as little as possible, dehydration, can slow down the symptoms. Second, dialysis imbalance, especially in the early stage of dialysis or dialysis insufficiency, such as patients in a short period of time dehydration and toxin significantly lower, peripheral blood lowering is more obvious, and because of the craniocerebral barrier leads to cranial brain can not quickly reduce the toxin, and through the blood-brain barrier leads to cerebral edema may occur, can appear after dialysis headache. It is recommended to actively rest in bed, increase the frequency of dialysis, so that dialysis can be sufficient to alleviate the above symptoms.