The causes of internal and external hemorrhoids are different, and so are the methods of treatment. Internal hemorrhoids: Internal hemorrhoids generally occur above the dentate line of the anal canal and are soft venous masses formed by the enlargement and varicosity of the suprahemorrhoidal plexus under the mucosa. Above the dentate line is mainly innervated by the vegetative nerves and is not sensitive to painful stimuli, so patients with internal hemorrhoids generally do not feel pain. The main symptoms of internal hemorrhoids are usually blood in the stool, prolapsed hemorrhoids, as well as difficulty in passing stool, inability to wipe clean after passing stool, and a feeling of swelling. Internal hemorrhoids bleed a lot, the blood is bright red, sometimes dripping down, sometimes spraying. If the internal hemorrhoid is serious, coughing and walking can cause the hemorrhoid nucleus to prolapse and cannot be returned by itself. External hemorrhoids: External hemorrhoids occur below the dentate line and are masses formed by varicose veins outside the hemorrhoid or inflammation, hypertrophy, connective tissue hyperplasia or thrombotic stasis in the skin of the anal folds. External hemorrhoids occur below the dentate line, the area is innervated by the somatic nerves and is sensitive to painful stimuli, external hemorrhoids do not cause bleeding and patients usually present with painful, perianal masses as the main symptom. The external hemorrhoid perianal lump can grow and harden under the stimulation of chronic inflammation, and the perianal area can become moist, painful and uncomfortable, and when the lump is damaged or infected, inflammatory phenomena such as redness, swelling, heat and pain can occur and can be accompanied by general discomfort and fever. One of the more unique aspects of external hemorrhoids is that their condition can be divided into varicose veins, connective tissue, thrombosis and inflammatory depending on their pathological characteristics. The most common of these is inflammatory external hemorrhoids, which mainly manifest as raised skin folds at the anal edge, redness, swelling, heat, edema, congestion, pressure pain, increased pain when defecating, and a small amount of discharge, some of which can be accompanied by general discomfort and fever. If you want to completely cure hemorrhoids and stay away from anal diseases, you must go to a regular anal hospital for examination and treatment, only to determine the correct cause of the disease, in order to prescribe the right medicine.