Hemroids Anal fissure 

Anorectal Conditions - Fissures, Abscesses, and Fistulas
There are three anorectal conditions with symptoms that are often mistaken for hemroids. These are fissures, abscesses, and fistulas. Let's describe them in a little bit more detail:

Fissure
A fissure is a tear in the skin of the anal canal, usually from the dentate line to the anal opening. Sometimes, a deep fissure (called an anal ulcer) can even expose the sphincter muscle.

Fissures can be caused as the result of forcing out a hard stool or a s the result of a complication from an anal surgery. The symptoms of this condition include pain or burning sensation during and after bowel movements, blood in the stool, swollen tissue and the presence of skin tags (which can be mistaken for hemroidsal skin tags). 

Like hemroids, fissures respond well to temporary treatments to relieve the painful symptoms, such as warm sitz bath and analgesic creams.

Typically, fissures do not become infected and can heal by themselves. In some cases where it does not self-heal because of constant and spontaneous contraction fo the anal muscle, a surgery can be performed to heal the tear.