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Clinically, hemorrhoids are divided into external hemorrhoids, internal hemorrhoids and mixed hemorrhoids. External hemorrhoids usually occur below the dentate line of the anal canal and near the anus. Internal hemorrhoids occur under the mucosa at the end of the rectum above the dentate line of the anal canal. Mixed hemorrhoids are formed by the fusion of internal hemorrhoids and external hemorrhoids at corresponding positions. After the patient is diagnosed with hemorrhoids, he should carefully observe his own situation. If there are no obvious symptoms, no special treatment is needed. Conservative treatment should be carried out first when symptoms appear. If hemorrhoids are necrotic or incarcerated, surgery can be carried out if necessary.