Dizziness, nausea, blackness in front of the eyes when bathing, because when bathing the peripheral skin capillary network opens, the blood flow to the peripheral skin, back to the cranium of the blood will be correspondingly reduced, resulting in cerebral blood supply insufficiency. In this case, some elderly people, usually weaker, less headache, before the bath did not eat the crowd, there will be a transient cerebral blood supply insufficiency, so the elderly need to be accompanied by a family member, usually weaker or usually less active people, try not to eat before the bath or in the bath one hour after the meal. Do not drink alcohol during meals, after alcohol or meal time and bath closer, the gastrointestinal tract also need more blood digestion, absorption, will cause cerebral blood supply insufficiency, so pay attention to the above situation.