Does an anal fissure puff up and cause discomfort outside of the rectal opening?

Usually not. Unless it has become infected and an abscess has developed or if there is an associated hemorrhoidal involvement. Best to be examined by a colorectal surgeon promptly.
Usually not. It is possible that you have such an inflammed fissure that this can happen. In extreme cases, inflammation surrounding the fissures does occur. However this is usually not the case.

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Could an anal fissure puff up and cause discomfort outside of the rectal opening?

ANAL FISSURES. Are tears in the anal canal. Since they are open wounds with stool and bacteria going by, there is always the risk of infection and development of an abscess which needs surgical drainage. Read more...