what are hemorrhoids

Hemorrhoids (commonly known as hemorrhoid) is a common disease located in the anal region. This disease can affect any age range but with age, the incidence rate was gradually increased. In China, hemorrhoids is the most common anorectal diseases, known as “10 men and nine hemorrhoids,” “10 female ten hemorrhoids” argument. In the United States, the incidence of hemorrhoids is about 5 %.


The site of occurrence of hemorrhoids were divided into internal hemorrhoids, external hemorrhoids, mixed hemorrhoids. In the anal skin and rectal mucosa junction there is a visible jagged lines called anal dentate line.

Above the dentate line of internal hemorrhoids, anal cushions support structure is venous plexus and arteriovenous anastomosis pathological changes or shifts, covering the rectal mucosa, due to the internal sphincter, anal cushions into the left side of the Y-shaped groove, front right side, right rear three, so common in the left internal hemorrhoids, right front and right rear side; below the dentate line as external hemorrhoids, anal mucous coating, can be divided into connective tissue external hemorrhoids, varicose veins, hemorrhoids, thrombosis external hemorrhoids; both internal hemorrhoids and external hemorrhoids is mixed hemorrhoids is hemorrhoids venous plexus by fusion with the corresponding external hemorrhoids, namely the upper and lower venous plexus anastomosis, mixed hemorrhoids prolapse outside the anus, when was plum-shaped, called a ring hemorrhoids, if is incarcerated sphincter form incarcerated hemorrhoid.


  1. Anal visual examination

In addition to the degree I, hemorrhoids are visible outside. The squatting degree prolapse can be observed.

  1. Digital rectal examination

Little significance for hemorrhoids, but to learn whether the other rectal lesions.

  1. Endoscope

You can look at inside to understand the rectum, anal canal situation.

Different Diagnosis

  1. Colorectal cancer

The main symptoms are bowel habits, may have rectal irritation, DRE and cauliflower mass, colonoscopy and biopsy can be characterized.

  1. Rectal polyps

More common in children, mostly low pedunculated polyps, rounded, solid, good activity.

  1. Rectal prolapse

Mucosa annular, smooth surface, sphincter relaxation.