What was the difference between hemorrhoids and anal fissure?

Anal fissure is anal skin cracks, Anal ulcer, it is difficult for the healing of the main performance. Because anal hemorrhoids is a peripheral vein varicose veins, vein corporations, and rectal mucosa sliding lower formed.
Common ground: anal fissure with the majority of sentinel hemorrhoids, in particular stage Ⅲ anal fissure, with external hemorrhoids, at the same time with internal hemorrhoids, and hemorrhoids may have internal hemorrhoids single, external hemorrhoids and mixed hemorrhoids. Its performance both in Phase III anal fissure, the same as anal appearance more than performance.
Different points: ① anal fissure mainly to pain, bleeding hemorrhoids to mainly only external hemorrhoids inflammation swelling, pain will hemorrhoids; ② anal fissure can be anal skin dehiscence, and hemorrhoids no, DRE, can be identified, anal fissure, most impractical DRE, or inspections; ③ anal fissure with more anal papilla mast, Anal papilloma, and are not associated with hemorrhoids or anal papilla nipple mast tumor; ④ anal fissure, anal appearance that narrow, and hemorrhoids are common in patients with internal hemorrhoids prolapse, valgus.