The right hemiplegia is mainly seen in the following causes: 1. If the right hemiplegia with acute onset is also accompanied by right hemiplegia and slurred vomiting, consider that the patient may have acute cerebrovascular disease, such as thalamic infarction or hemorrhage, and need to do a cranial CT or MRI to clarify. 2. If the right hemiplegia lasts for a long time, also ask the patient if there is acute cerebrovascular disease and In recovery condition, especially patients with thalamic infarction or hemorrhage are prone to thalamic pain, which is manifested as hemiplegia and numbness.3. Ask the patient whether the pain is a burst or persistent. If the pain is paroxysmal, go for an EEG to understand whether there is epilepsy, some epileptic patients also show paroxysmal pain in the hemiplegia. 4. If there is a clear demarcation line of pain in the right hemiplegia, consider the possibility that the patient may have somatization disorder and need to go for anxiety and depression scale.