1.Blood in stool Blood in stool is the early symptom and main symptom of internal hemorrhoids. Mostly due to the dry and hard fecal lumps rubbing the mucous membrane of hemorrhoids during defecation or excessive force during defecation, the increased abdominal pressure causes the dilated blood vessels of hemorrhoids to rupture and bleed. The blood is bright red, initially blood in the stool, followed by dripping blood, or even jet bleeding in severe cases. The amount of bleeding varies from a few drops, a few milliliters to hundreds of milliliters. Repeated heavy bleeding can cause the patient to fall into severe anemia. When the internal hemorrhoid develops to stage III, the amount of bleeding decreases due to fibrosis of the hemorrhoid mucosa. Sometimes the rupture of blood vessels caused by mucosal erosion and tearing of hemorrhoids can lead to hemorrhage, and serious bleeding shock can occur. 2, internal hemorrhoids prolapse Mostly seen in the second and third stage of internal hemorrhoids and mixed hemorrhoids, prolapsed outside the anus internal hemorrhoids, by the sphincter muscle clamping, venous reflux is blocked, while the arterial blood is still constantly input, so that the volume of the hemorrhoid nucleus is increasing, until the arterial blood vessels are pressed closed, the formation of thrombus, the nucleus of the hemorrhoid hardened, painful, difficult to send back to the anus. When the hemorrhoid nucleus comes out and cannot be sent back, it is called an embedded hemorrhoid, also known as “strangulated internal hemorrhoid”. Stage II internal hemorrhoids can be reset on their own after defecation. The third-stage internal hemorrhoids can be slowly reset only after defecation by hand or bed rest. 3.Pain Mostly caused by inflammation of external hemorrhoids, mixed hemorrhoids, or edema and necrosis of internal hemorrhoids that cannot be returned. The painful phenomenon of bleeding perianal area during bowel movement. Because the perianal nervous system is more developed and sensitive, it is easy for pain to occur after stimulation. Generally manifested as mild pain, stabbing pain, burning pain, swelling pain, etc. 4, mucus overflow Mostly seen in the stage of hemorrhoid nucleus prolapse, internal hemorrhoids secrete more mucus, also seen in the chronic inflammation of rectal diseases, causing mucosal ring cells to secrete more mucus and wetting around the anus. In the late stage of internal hemorrhoids, there is often secretion flowing from the anus because of the relaxation of the anal sphincter. In the lighter cases, the secretion comes out during bowel movement, and in the heavier cases, it comes out naturally even when there is no bowel movement. 5, anal itching Mostly due to excessive mucus secretions, the anal canal and anal edge skin stimulation, local eczema-like changes. 6, rectal cramps Anorectal cramps are mainly symptoms of external hemorrhoids. If the internal hemorrhoid is infected, embedded, or has strangulated necrosis, this can lead to severe cramping pain. In mild cases, there is a feeling of swelling and falling, and in heavy cases, there is heavy falling pain.